Logic and Reasoning Questions and Answers

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Q61
Look at this series: 8, 43, 11, 41, __, 39, 17, . . . What number should fill in the blank?
  • A 8
  • B 14
  • C 43
  • D 44
Answer: Option B
Explanation: This is a simple alternating addition and subtraction series. The first series begins with 8 and adds 3; the second begins with 43 and subtracts 2.
Q62
Look at this series: 15, __, 27, 27, 39, 39, . . . What number should fill the blank?
  • A 51
  • B 39
  • C 23
  • D 15
Answer: Option D
Explanation: In this simple addition with repetition series, each number in the series repeats itself, and then increases by 12 to arrive at the next number.
Q63
Look at this series: 83, 73, 93, 63, __, 93, 43, . . . What number should fill the blank?
  • A 33
  • B 53
  • C 73
  • D 93
Answer: Option B
Explanation: This is a simple subtraction series in which a random number, 93, is interpolated as every third number. In the subtraction series, 10 is subtracted from each number to arrive at the next.
Q64
Look at this series: 4, 7, 25, 10, __, 20, 16, 19, . . .What number should fill the blank?
  • A 13
  • B 15
  • C 20
  • D 28
Answer: Option A
Explanation: Two series alternate here, with every third number following a different pattern. In the main series, 3 is added to each number to arrive at the next. In the alternating series, 5 is subtracted from each number to arrive at the next.
Q65
Look at this series: 72, 76, 73, 77, 74, __, 75, . . . What number should fill the blank?
  • A 70
  • B 71
  • C 75
  • D 78
Answer: Option D
Explanation: This series alternates the addition of 4 with the subtraction of 3.
Q66
This series alternates the addition of 4 with the subtraction of 3.
  • A 70
  • B 71
  • C 80
  • D 96
Answer: Option A
Explanation: In this series, 5 is added to the previous number; the number 70 is inserted as every third number.
Q67
Look at this series: 664, 332, 340, 170, __, 89, . . .What number should fill the blank?
  • A 85
  • B 97
  • C 109
  • D 178
Answer: Option D
Explanation: This is an alternating division and additionseries: First, divide by 2, and then add 8.
Q68
Look at this series: 0.15, 0.3, __, 1.2, 2.4, . . . What number should fill the blank?
  • A 4.8
  • B 0.006
  • C 0.6
  • D 0.9
Answer: Option C
Explanation: This is a simple multiplication series. Each number is 2 times greater than the previous number.
Q69
Look at this series 1/9, 1/3, 1, _____, 9 .......... what number should fill bank.
  • A 2/3
  • B 3
  • C 6
  • D 27
Answer: Option B
Explanation: This is a multiplication series; each number is 3 times the previous number.
Q70
Look at this series: U32, V29, __, X23, Y20, . . . What number should fill the blank?
  • A W26
  • B W17
  • C Z17
  • D Z26
Answer: Option A
Explanation: In this series, the letters progress by 1; the numbers decrease by 3.

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