RRB NTPC CBT 1 (Graduate and Undergraduate)Paper 10, booklet 8097350

Test booklet
प्रश्न पुस्तिका
Booklet No.
8097350
Series
D

RRB NTPC CBT 1 (Graduate and Undergraduate) Paper 10

Questions
100
Maximum marks
100
Minutes allowed
90

Roll No. assigned when you start

Instructions निर्देश

  1. This booklet has 100 questions in 3 parts: A. General Awareness (40), B. Mathematics (30), C. General Intelligence and Reasoning (30).
  2. You have 90 minutes for the whole paper. The clock starts when you break the seal.
  3. Each question has 4 options and one right answer. A right answer earns 1 mark. A wrong answer costs 0.33. A question left blank scores nothing.
  4. Fill one bubble per question on the answer sheet. Unlike a real sheet, you can clear it and change your mind.

Scripting is off, so this page is a printed paper: answer on paper, then open each question’s working.

Part AGeneral Awareness

40 questions, 1 mark each, 0.33 off for a wrong answer

  1. What is the capital of Rwanda?
    Question 1
    Answer and working

    Answer D

    Rwanda: Kigali.

    Source: Wikidata (CC0)

  2. Who was the Prime Minister of India throughout 1959?
    Question 2
    Answer and working

    Answer D

    Jawaharlal Nehru held the office from 1947 to 1964.

    Source: Wikidata (CC0)

  3. Consider the following pairs of dams and their rivers:
    DamRiver
    1.Bhakra DamSutlej
    2.Maithon DamJawai River
    3.Konar DamNarmada
    How many of the pairs given above are correctly matched?
    Question 3
    Answer and working

    Answer A

    1. correct; 2. wrong: Maithon Dam goes with Barakar River; 3. wrong: Konar Dam goes with Konar River. So: Only one pair.

    Source: Wikidata (CC0)

  4. In which year was the Battle of Karnal fought?
    Question 4
    Answer and working

    Answer B

    Battle of Karnal: 1739.

    Source: Wikidata (CC0)

  5. What is the chemical symbol of fluorine?
    Question 5
    Answer and working

    Answer A

    Fluorine: F.

    Source: Wikidata (CC0)

  6. What is the currency of Nicaragua?
    Question 6
    Answer and working

    Answer C

    Nicaragua: Nicaraguan córdoba.

    Source: Wikidata (CC0)

  7. Grass Hills National Park is in which state?
    Question 7
    Answer and working

    Answer D

    Grass Hills National Park: Tamil Nadu.

    Source: Wikidata (CC0)

  8. Dev Anand received the Dadasaheb Phalke Award for which year?
    Question 8
    Answer and working

    Answer A

    Dev Anand: 2002.

    Source: Wikidata (CC0)

  9. Which of these sportspersons is associated with hockey?
    Question 9
    Answer and working

    Answer A

    hockey: Major Dhyan Chand Singh.

    Source: Wikidata (CC0)

  10. In which year was Govind Ballabh Pant awarded the Bharat Ratna?
    Question 10
    Answer and working

    Answer C

    Govind Ballabh Pant: 1957.

    Source: Wikidata (CC0)

  11. What is the capital of Goa?
    Question 11
    Answer and working

    Answer C

    Goa: Panaji.

    Source: Wikidata (CC0)

  12. Govind Pashu Vihar National Park and Sanctuary is in which state?
    Question 12
    Answer and working

    Answer A

    Govind Pashu Vihar National Park and Sanctuary: Uttarakhand.

    Source: Wikidata (CC0)

  13. Where is the headquarters of the United Nations Industrial Development Organization?
    Question 13
    Answer and working

    Answer C

    United Nations Industrial Development Organization: Vienna.

    Source: Wikidata (CC0)

  14. Churches and Convents of Goa, a UNESCO World Heritage Site, is in which state?
    Question 14
    Answer and working

    Answer D

    Churches and Convents of Goa: Goa.

    Source: Wikidata (CC0)

  15. In which year was the Battle of Plassey fought?
    Question 15
    Answer and working

    Answer C

    Battle of Plassey: 1757.

    Source: Wikidata (CC0)

  16. Consider the following pairs of books and their authors:
    BookAuthor
    1.Autobiography of a YogiSafiur Rahman Mubarakpuri
    2.GitanjaliJaswant Singh
    3.AnandamathMulk Raj Anand
    How many of the pairs given above are correctly matched?
    Question 16
    Answer and working

    Answer D

    1. wrong: Autobiography of a Yogi goes with Paramahansa Yogananda; 2. wrong: Gitanjali goes with Rabindranath Tagore; 3. wrong: Anandamath goes with Bankim Chandra Chatterjee. So: None of the pairs.

    Source: Wikidata (CC0)

  17. Which of these organisations has its headquarters in Abuja?
    Question 17
    Answer and working

    Answer C

    Abuja: Economic Community of West African States.

    Source: Wikidata (CC0)

  18. Who was the Vice President of India throughout 1968?
    Question 18
    Answer and working

    Answer C

    V. V. Giri held the office from 1967 to 1969.

    Source: Wikidata (CC0)

  19. Which of these rivers flows into the Vembanad?
    Question 19
    Answer and working

    Answer C

    Vembanad: Periyar River.

    Source: Wikidata (CC0)

  20. International Women's Day is observed on which date?
    Question 20
    Answer and working

    Answer A

    International Women's Day: March 8.

    Source: Wikidata (CC0)

  21. In which year was Gujarat formed as a state or union territory in its present form?
    Question 21
    Answer and working

    Answer D

    Gujarat: 1960.

    Source: Wikidata (CC0)

  22. Amrabad Tiger Reserve is in which state?
    Question 22
    Answer and working

    Answer B

    Amrabad Tiger Reserve: Telangana.

    Source: Wikidata (CC0)

  23. Ankara is the capital of which country?
    Question 23
    Answer and working

    Answer C

    Ankara: Turkey.

    Source: Wikidata (CC0)

  24. Nanda Devi and Valley of Flowers National Parks, a UNESCO World Heritage Site, is in which state?
    Question 24
    Answer and working

    Answer B

    Nanda Devi and Valley of Flowers National Parks: Uttarakhand.

    Source: Wikidata (CC0)

  25. In which year was GSAT-16 launched?
    Question 25
    Answer and working

    Answer B

    GSAT-16: 2014.

    Source: Wikidata (CC0)

  26. Which element has the symbol Sb?
    Question 26
    Answer and working

    Answer C

    Sb is Antimony.

    Source: Wikidata (CC0)

  27. Consider the following pairs of sportspersons and their sports:
    SportspersonSport
    1.Koneru Humpyauto racing
    2.Mahesh Bhupathiweightlifting
    3.Lovlina Borgohainboxing
    How many of the pairs given above are correctly matched?
    Question 27
    Answer and working

    Answer A

    1. wrong: Koneru Humpy goes with chess; 2. wrong: Mahesh Bhupathi goes with tennis; 3. correct. So: Only one pair.

    Source: Wikidata (CC0)

  28. Which of these national parks is in Uttar Pradesh?
    Question 28
    Answer and working

    Answer B

    Uttar Pradesh: Dudhwa National Park.

    Source: Wikidata (CC0)

  29. In which year was Nalanda Mahavihara inscribed as a UNESCO World Heritage Site?
    Question 29
    Answer and working

    Answer B

    Nalanda Mahavihara: 2016.

    Source: Wikidata (CC0)

  30. Who was the Governor of the Reserve Bank of India throughout 1938?
    Question 30
    Answer and working

    Answer A

    James Braid Taylor held the office from 1937 to 1943.

    Source: Wikidata (CC0)

  31. International Coffee Day is observed on which date?
    Question 31
    Answer and working

    Answer A

    International Coffee Day: October 1.

    Source: Wikidata (CC0)

  32. What is the currency of Czech Republic?
    Question 32
    Answer and working

    Answer A

    Czech Republic: Czech koruna.

    Source: Wikidata (CC0)

  33. Which of these World Heritage Sites is in Sikkim?
    Question 33
    Answer and working

    Answer A

    Sikkim: Khangchendzonga National Park.

    Source: Wikidata (CC0)

  34. Who wrote ‘Volga Se Ganga’?
    Question 34
    Answer and working

    Answer A

    Volga Se Ganga: Rahul Sankrityayan.

    Source: Wikidata (CC0)

  35. The Luni river flows into which?
    Question 35
    Answer and working

    Answer C

    Luni River: Rann of Kutch.

    Source: Wikidata (CC0)

  36. Consider the following pairs of musicians and their instruments:
    MusicianInstrument
    1.Amjad Ali Khansarod
    2.Shivkumar Sharmasitar
    3.Nikhil Banerjeesitar
    How many of the pairs given above are correctly matched?
    Question 36
    Answer and working

    Answer B

    1. correct; 2. wrong: Shivkumar Sharma goes with santur; 3. correct. So: Only two pairs.

    Source: Wikidata (CC0)

  37. Who was the Governor of the Reserve Bank of India throughout 1938?
    Question 37
    Answer and working

    Answer B

    James Braid Taylor held the office from 1937 to 1943.

    Source: Wikidata (CC0)

  38. Bhubaneswar is the capital of which state or union territory?
    Question 38
    Answer and working

    Answer D

    Bhubaneswar: Odisha.

    Source: Wikidata (CC0)

  39. U. R. Ananthamurthy received the Jnanpith Award in which year?
    Question 39
    Answer and working

    Answer C

    U. R. Ananthamurthy: 1994.

    Source: Wikidata (CC0)

  40. Renuka Lake, a Ramsar wetland, is in which state?
    Question 40
    Answer and working

    Answer D

    Renuka Lake: Himachal Pradesh.

    Source: Wikidata (CC0)

Part BMathematics

30 questions, 1 mark each, 0.33 off for a wrong answer

  1. The simple interest on a sum for 2 years at 4% per annum is ₹2,440. What is the sum?
    Question 41
    Answer and working

    Answer A

    P = SI × 100 / (R × T) = 2,440 × 100 / (4 × 2) = ₹30,500.

  2. A bus goes from Pune to Nashik at 18 km/h and returns by the same road at 36 km/h. What is its average speed for the whole journey?
    Question 42
    Answer and working

    Answer C

    For equal distances, average speed = 2xy/(x + y) = 2 × 18 × 36 ÷ 54 = 24 km/h. The plain average, 27, ignores that the slower leg takes longer.

  3. What is the unit digit of 3130?
    Question 43
    Answer and working

    Answer A

    The unit digits of the powers of 3 repeat in a cycle of 4: 3, 9, 7, 1. 130 is position 2 in that cycle (130 ÷ 4 leaves 2), so the unit digit is 9.

  4. The present ages of Asha and her father are in the ratio 3 : 7. After 6 years, the ratio will be 1 : 2. What is Asha’s present age?
    Question 44
    Answer and working

    Answer B

    Ages 3x and 7x. (3x + 6) : (7x + 6) = 1 : 2 gives x = 6. Asha is 3 × 6 = 18 years.

  5. What is the smallest number which, when divided by 18, 16 or 15, leaves a remainder of 3 in each case?
    Question 45
    Answer and working

    Answer A

    LCM of 18, 16, 15 = 720. Add the remainder: 720 + 3 = 723.

  6. Two trains 230 m and 210 m long run on parallel tracks in opposite directions at 56 km/h and 88 km/h. How long do they take to cross each other?
    Question 46
    Answer and working

    Answer D

    Relative speed = 56 + 88 = 144 km/h = 40 m/s. Distance = 230 + 210 = 440 m. Time = 440 ÷ 40 = 11 seconds.

  7. Simplify: 1⁄4 + 2⁄3 + 1⁄5
    Question 47
    Answer and working

    Answer B

    Over the common denominator 120: the sum is 67⁄60. Adding tops and bottoms separately (6/21) is the trap.

  8. A and B together can do a job in 9 days. A alone can do it in 12 days. In how many days can B alone do it?
    Question 48
    Answer and working

    Answer A

    B’s one day = 1/9 − 1/12 = 1/36. B alone takes 36 days.

  9. The average of 6 numbers is 78. When one number is removed, the average of the rest is 81. Which number was removed?
    Question 49
    Answer and working

    Answer C

    Total of 6 = 6 × 78 = 468. Total of 5 = 5 × 81 = 405. Removed = 468 − 405 = 63.

  10. The average of 11 numbers is 53. When one number is removed, the average of the rest is 56. Which number was removed?
    Question 50
    Answer and working

    Answer B

    Total of 11 = 11 × 53 = 583. Total of 10 = 10 × 56 = 560. Removed = 583 − 560 = 23.

  11. If a + b = 12 and ab = 11, what is a² + b²?
    Question 51
    Answer and working

    Answer B

    a² + b² = (a + b)² − 2ab = 144 − 22 = 122.

  12. ₹4,650 is divided among Amit, Bina and Chetan in the ratio 5 : 4 : 1. What is Chetan’s share?
    Question 52
    Answer and working

    Answer C

    Total parts = 5 + 4 + 1 = 10. Chetan gets 1/10 × 4,650 = ₹465.

  13. A boat covers 68 km downstream in 4 hours and 30 km upstream in 6 hours. What is the speed of the boat in still water?
    Question 53
    Answer and working

    Answer C

    Downstream speed = 68 ÷ 4 = 17 km/h; upstream = 30 ÷ 6 = 5 km/h. Boat = (17 + 5) ÷ 2 = 11 km/h.

  14. Two successive discounts of 10% and 10% are equal to a single discount of:
    Question 54
    Answer and working

    Answer D

    Single discount = 10 + 10 − (10 × 10)/100 = 19%. The second discount is taken on the already reduced price, so the two do not simply add.

  15. The angles of a triangle are in the ratio 5 : 1 : 3. What is the largest angle?
    Question 55
    Answer and working

    Answer B

    9 parts make 180°, so one part is 20°. The largest is 5 × 20 = 100°.

  16. What is the median of these numbers: 22, 39, 38, 58, 60, 52, 22?
    Question 56
    Answer and working

    Answer D

    In order: 22, 22, 38, 39, 52, 58, 60. The middle value is 39.

  17. The population of a town is 51,750. It grows by 20% every year. What will it be after 2 years?
    Question 57
    Answer and working

    Answer C

    51,750 × (1 + 20/100)² = 51,750 × 1.44 = 74,520. Growing 20% on 51,750 twice, not 40% once.

  18. The incomes of P and Q are in the ratio 3 : 4 and their expenditures are in the ratio 11 : 15. If each saves ₹3,000 a month, what is P’s monthly income?
    Question 58
    Answer and working

    Answer D

    Incomes 3x and 4x. (3x − 3,000) : (4x − 3,000) = 11 : 15 gives x = 12,000. P’s income = 3 × 12,000 = ₹36,000.

  19. A shopkeeper marks an article 20% above its cost price and allows a discount of 10%. If the article was sold for ₹1,242, what was its cost price?
    Question 59
    Answer and working

    Answer D

    SP = CP × 1.2 × 0.9 = CP × 1.08. So CP = 1,242 ÷ 1.08 = ₹1,150.

  20. What is the value of 2 sin 90° − cot² 30°?
    Question 60
    Answer and working

    Answer A

    sin 90° = 1 and cot² 30° = 3. So 2 × 1 − 3 = −1.

  21. What is 45% of 920?
    Question 61
    Answer and working

    Answer B

    45% of 920 = 920 × 45/100 = 414.

  22. Pipe A fills a tank in 30 hours; pipe B empties the full tank in 55 hours. If both are opened together on an empty tank, when will it be full?
    Question 62
    Answer and working

    Answer D

    Net filling per hour = 1/30 − 1/55 = 1/66. Time = 66 hours.

  23. A cylinder has radius 7 cm and height 17 cm. What is its curved surface area? (π = 22/7)
    Question 63
    Answer and working

    Answer A

    Curved surface = 2πrh = 2 × 22/7 × 7 × 17 = 748 cm².

  24. Solve for x: 3x + 17 = 1x + 15
    Question 64
    Answer and working

    Answer B

    3x − 1x = 15 − 17, so 2x = −2 and x = −2 ÷ 2. x = −1.

  25. Simplify: 7⁄10 + 7⁄8 + 1⁄3
    Question 65
    Answer and working

    Answer C

    Over the common denominator 120: the sum is 229⁄120. Adding tops and bottoms separately (15/21) is the trap.

  26. The average weight of 5 people goes up by 2.5 kg when a new person takes the place of one who weighs 53 kg. What does the new person weigh?
    Question 66
    Answer and working

    Answer D

    The total rises by 5 × 2.5 = 12.5 kg, so the new person weighs 53 + 12.5 = 65.5 kg.

  27. A shopkeeper marks his goods 20% above the cost price and allows a discount of 30%. What is his profit or loss percent?
    Question 67
    Answer and working

    Answer D

    Take CP = 100. Marked price = 120. After 30% off: 120 × 70/100 = 84. So 16% loss.

  28. 21 litres of a mixture contains milk and water in the ratio 4 : 3. How much water must be added to make the ratio 1 : 3?
    Question 68
    Answer and working

    Answer C

    Milk = 12 l, water = 9 l. For 1 : 3, water must be 12 × 3/1 = 36 l. Add 36 − 9 = 27 litres.

  29. What is the compound interest on ₹59,750 for 3 years at 20% per annum, compounded annually?
    Question 69
    Answer and working

    Answer B

    Amount = 59,750 × (1 + 20/100)3 = ₹1,03,248. CI = 1,03,248 − 59,750 = ₹43,498.

  30. The two sides containing the right angle of a triangle are 5 cm and 12 cm. What is its hypotenuse?
    Question 70
    Answer and working

    Answer B

    Hypotenuse = √(5² + 12²) = √169 = 13 cm.

Part CGeneral Intelligence and Reasoning

30 questions, 1 mark each, 0.33 off for a wrong answer

  1. If ‘+’ means ‘÷’, ‘−’ means ‘×’, ‘×’ means ‘+’, ‘÷’ means ‘−’, what is the value of 12 + 3 − 4 × 18 ÷ 8?
    Question 71
    Answer and working

    Answer D

    Replace the signs: 12 ÷ 3 × 4 + 18 − 8. Division and multiplication first, then addition and subtraction: 26.

  2. Which pair comes next? FZ, GW, HT, IQ, ?
    Question 72
    Answer and working

    Answer C

    The first letters move forward 1 (F, G, H, I); the second move back 3 (Z, W, T, Q). Next: JN.

  3. Which number replaces the question mark? 4, 42, 9, 40, 14, 38, 19, ?
    Question 73
    Answer and working

    Answer C

    The rule: two series alternate: 4, 9, 14 … rising by 5, and 42, 40, 38 … falling by 2. The missing term is 36.

  4. If ‘+’ means ‘−’, ‘−’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’, what is the value of 12 − 6 + 3 × 3 ÷ 5?
    Question 74
    Answer and working

    Answer A

    Replace the signs: 12 × 6 − 3 ÷ 3 + 5. Division and multiplication first, then addition and subtraction: 76.

  5. Which one does not belong with the others?
    Question 75
    Answer and working

    Answer A

    88, 143, 110 are multiples of 11; 98 is not. The odd one is 98.

  6. Arun walks 5 km towards the west. He turns left and walks 3 km. He turns left and walks 5 km. How far is he from the starting point in a straight line?
    Question 76
    Answer and working

    Answer B

    Taking east and north as positive: he ends 0 km east and 3 km south of the start. Straight-line distance = √(0² + 3²) = 3 km.

  7. In a certain code, CHALK is written as 40. How is SCHOOL written in that code?
    Question 77
    Answer and working

    Answer D

    CHALK = 40 is the sum of (position + 1) for each letter. For SCHOOL: 20 + 4 + 9 + 16 + 16 + 13 = 78.

  8. Which group comes next? DEF, JKL, PQR, ?
    Question 78
    Answer and working

    Answer B

    Inside each group the letters step by 1; each group starts 6 letters after the last (D, J, P). Next: VWX.

  9. In the English alphabet, which letter is 7th to the right of the 8th letter from the right?
    Question 79
    Answer and working

    Answer A

    The 8th letter from the right is S (position 19). 7 places to the right: position 26, which is Z.

  10. In a certain code, GLASS is written as JODVV. How is PLANT written in that code?
    Question 80
    Answer and working

    Answer B

    From GLASS → JODVV: each letter moves 3 places forward. Applied to PLANT: SODQW.

  11. Which one does not belong with the others?
    Question 81
    Answer and working

    Answer D

    79, 71, 19 are prime; 21 = 3 × 7. The odd one is 21.

  12. W is the mother of J. M is the son of V. V is the sister of W. How is M related to J?
    Question 82
    Answer and working

    Answer B

    Follow the links out from J: W is J’s mother; V is W’s sister; M is V’s son. So M is J’s cousin.

  13. 3 : 10 :: 9 : ?
    Question 83
    Answer and working

    Answer A

    10 = 3² + 1, the rule n² + 1. For 9: 9² + 1 = 82.

  14. At what time between 1 and 2 o’clock are the hands of a clock together?
    Question 84
    Answer and working

    Answer B

    The minute hand gains 11/2° a minute and must gain 30°. Time = 30 ÷ 5.5 = 60 × 1/11 = 55⁄11 minutes past 1.

  15. Which one does not belong with the others?
    Question 85
    Answer and working

    Answer B

    36, 90, 117 are multiples of 9; 46 is not. The odd one is 46.

  16. Statements:
    (1) Some clocks are rings.
    (2) All rings are planes.

    Conclusions:
    (I) Some planes are not rings.
    (II) Some planes are clocks.

    Take the statements to be true, however odd they sound. Which conclusion follows?
    Question 86
    Answer and working

    Answer B

    Conclusion I need not hold: every one of the planes may be rings. Conclusion II holds in every diagram the statements allow. So: Only conclusion II follows.

  17. Statements:
    (1) All pens are phones.
    (2) Some trees are not pens.

    Conclusions:
    (I) Some pens are not phones.
    (II) No phones are pens.

    Take the statements to be true, however odd they sound. Which conclusion follows?
    Question 87
    Answer and working

    Answer D

    Conclusion I need not hold: every one of the pens may be phones. Conclusion II need not hold: phones and pens may overlap. So: Neither conclusion follows.

  18. Which one does not belong with the others?
    Question 88
    Answer and working

    Answer B

    8, 216, 125 are cubes; 49 is a square, not a cube. The odd one is 49.

  19. G is the husband of F. F is the sister of Y. Y is the mother of Z. How is G related to Z?
    Question 89
    Answer and working

    Answer C

    Follow the links out from Z: Y is Z’s mother; F is Y’s sister; G is F’s husband. So G is Z’s uncle.

  20. 9 : 730 :: 11 : ?
    Question 90
    Answer and working

    Answer B

    730 = 9³ + 1, the rule n³ + 1. For 11: 11³ + 1 = 1,332.

  21. FG : IJ :: QR : ?
    Question 91
    Answer and working

    Answer C

    Each letter of FG moves 3 forward to give IJ. Doing the same to QR gives TU.

  22. Today is Friday. What day of the week will it be 21 days from today?
    Question 92
    Answer and working

    Answer D

    21 ÷ 7 leaves 0. 0 days on from Friday is Friday.

  23. In a certain code, PLANET is written as 74. How is SUGAR written in that code?
    Question 93
    Answer and working

    Answer D

    PLANET = 74 is the sum of (position + 1) for each letter. For SUGAR: 20 + 22 + 8 + 2 + 19 = 71.

  24. Kavita walks 4 km towards the west. She turns left and walks 8 km. She turns right and walks 7 km. She turns right and walks 8 km. How far is she from the starting point in a straight line?
    Question 94
    Answer and working

    Answer C

    Taking east and north as positive: she ends 11 km west and 0 km north of the start. Straight-line distance = √(11² + 0²) = 11 km.

  25. Directions for questions 95 to 95

    Five friends, Arun, Bina, Chetan, Divya and Esha, sit in a row facing north. Esha sits immediately to the right of Divya. Divya and Chetan sit next to each other. Exactly one person sits between Esha and Arun.
  26. How many people sit between Esha and Divya?
    Question 95
    Answer and working

    Answer C

    Only one order fits every clue, from the left: Chetan, Divya, Esha, Bina, Arun. Between them: None.

  27. In a class, Anjali ranks 22nd from the top and 7th from the bottom. How many students are in the class?
    Question 96
    Answer and working

    Answer A

    Anjali is counted in both ranks, so the total is 22 + 7 − 1 = 28.

  28. 8 : 73 :: 11 : ?
    Question 97
    Answer and working

    Answer D

    73 = 8² + 8 + 1, the rule n² + n + 1. For 11: 11² + 11 + 1 = 133.

  29. If ‘+’ means ‘×’, ‘−’ means ‘÷’, ‘×’ means ‘+’, ‘÷’ means ‘−’, what is the value of 59 ÷ 12 + 10 − 6 × 6?
    Question 98
    Answer and working

    Answer A

    Replace the signs: 59 − 12 × 10 ÷ 6 + 6. Division and multiplication first, then addition and subtraction: 45.

  30. In a certain code, APPLE is written as 100. How is RAIN written in that code?
    Question 99
    Answer and working

    Answer A

    APPLE = 100 is twice the sum of the letters’ positions in the alphabet. For RAIN: 18 + 1 + 9 + 14 doubled = 84.

  31. Which number replaces the question mark? 3, 12, 28, 53, 89, 138, ?
    Question 100
    Answer and working

    Answer A

    The rule: the differences are squares: 9, 16, 25, 36, 49, 64. The missing term is 202.