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RBI Grade B Average Questions with Answers & Explanations

19 Average questions from the Quantitative Aptitude section of RBI Grade B, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.

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Question 1

The average of 5 numbers is 28. If one number is removed, the average of the remaining numbers becomes 26. What is the number removed?

  1. A34
  2. B41
  3. C31
  4. D36
  5. E39
Show answer
Answer: (D) 36 Removed number = 5 × 28 − 4 × 26 = 36.
Question 2

The average of 8 numbers is 45. If one number is removed, the average of the remaining numbers becomes 43. What is the number removed?

  1. A56
  2. B58
  3. C51
  4. D54
  5. E59
Show answer
Answer: (E) 59 Removed number = 8 × 45 − 7 × 43 = 59.
Question 3

The average of 5 numbers is 54. If one number is removed, the average of the remaining numbers becomes 57. What is the number removed?

  1. A44
  2. B39
  3. C37
  4. D42
  5. E47
Show answer
Answer: (D) 42 Removed number = 5 × 54 − 4 × 57 = 42.
Question 4

The average of 6 numbers is 58. If one number is removed, the average of the remaining numbers becomes 56. What is the number removed?

  1. A74
  2. B66
  3. C67
  4. D63
  5. E68
Show answer
Answer: (E) 68 Removed number = 6 × 58 − 5 × 56 = 68.
Question 5

The average of 5 numbers is 39. If one number is removed, the average of the remaining numbers becomes 41. What is the number removed?

  1. A31
  2. B30
  3. C34
  4. D29
  5. E36
Show answer
Answer: (A) 31 Removed number = 5 × 39 − 4 × 41 = 31.
Question 6

The average of 5 numbers is 44. If one number is removed, the average of the remaining numbers becomes 42. What is the number removed?

  1. A51
  2. B52
  3. C57
  4. D49
  5. E50
Show answer
Answer: (B) 52 Removed number = 5 × 44 − 4 × 42 = 52.
Question 7

The average of 6 numbers is 45. If one number is removed, the average of the remaining numbers becomes 48. What is the number removed?

  1. A35
  2. B36
  3. C29
  4. D24
  5. E30
Show answer
Answer: (E) 30 Removed number = 6 × 45 − 5 × 48 = 30.
Question 8

The average of 8 numbers is 32. If one number is removed, the average of the remaining numbers becomes 36. What is the number removed?

  1. A2
  2. B9
  3. C7
  4. D4
  5. E5
Show answer
Answer: (D) 4 Removed number = 8 × 32 − 7 × 36 = 4.
Question 9

The average of 5 numbers is 49. If one number is removed, the average of the remaining numbers becomes 51. What is the number removed?

  1. A41
  2. B40
  3. C44
  4. D38
  5. E46
Show answer
Answer: (A) 41 Removed number = 5 × 49 − 4 × 51 = 41.
Question 10

The average of 6 numbers is 47. If one number is removed, the average of the remaining numbers becomes 50. What is the number removed?

  1. A33
  2. B32
  3. C26
  4. D31
  5. E30
Show answer
Answer: (B) 32 Removed number = 6 × 47 − 5 × 50 = 32.

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Question 11

The average of 10 numbers is 46. If one number is removed, the average of the remaining numbers becomes 48. What is the number removed?

  1. A23
  2. B38
  3. C28
  4. D29
  5. E30
Show answer
Answer: (C) 28 Removed number = 10 × 46 − 9 × 48 = 28.
Question 12

The average of 6 numbers is 25. If one number is removed, the average of the remaining numbers becomes 28. What is the number removed?

  1. A4
  2. B7
  3. C9
  4. D16
  5. E10
Show answer
Answer: (E) 10 Removed number = 6 × 25 − 5 × 28 = 10.
Question 13

The average of 5 numbers is 38. If one number is removed, the average of the remaining numbers becomes 35. What is the number removed?

  1. A45
  2. B55
  3. C53
  4. D48
  5. E50
Show answer
Answer: (E) 50 Removed number = 5 × 38 − 4 × 35 = 50.
Question 14

The average of 10 numbers is 39. If one number is removed, the average of the remaining numbers becomes 36. What is the number removed?

  1. A68
  2. B65
  3. C71
  4. D63
  5. E66
Show answer
Answer: (E) 66 Removed number = 10 × 39 − 9 × 36 = 66.
Question 15

The average of 8 numbers is 25. If one number is removed, the average of the remaining numbers becomes 23. What is the number removed?

  1. A39
  2. B34
  3. C40
  4. D38
  5. E41
Show answer
Answer: (A) 39 Removed number = 8 × 25 − 7 × 23 = 39.
Question 16

The average of 10 numbers is 32. If one number is removed, the average of the remaining numbers becomes 29. What is the number removed?

  1. A59
  2. B60
  3. C54
  4. D58
  5. E61
Show answer
Answer: (A) 59 Removed number = 10 × 32 − 9 × 29 = 59.
Question 17

The average of 6 numbers is 39. If one number is removed, the average of the remaining numbers becomes 41. What is the number removed?

  1. A29
  2. B31
  3. C26
  4. D34
  5. E30
Show answer
Answer: (A) 29 Removed number = 6 × 39 − 5 × 41 = 29.
Question 18

The average of 5 numbers is 50. If one number is removed, the average of the remaining numbers becomes 54. What is the number removed?

  1. A35
  2. B36
  3. C29
  4. D34
  5. E39
Show answer
Answer: (D) 34 Removed number = 5 × 50 − 4 × 54 = 34.
Question 19

The average of 8 numbers is 47. If one number is removed, the average of the remaining numbers becomes 51. What is the number removed?

  1. A19
  2. B21
  3. C22
  4. D20
  5. E16
Show answer
Answer: (A) 19 Removed number = 8 × 47 − 7 × 51 = 19.

These are RankerClub practice questions written in the RBI Grade B pattern. They are not official SSC/IBPS/RRB papers.

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