IBA Karachi Aptitude Test analytical reasoning: Logical Deductions MCQs

Practice Logical Deductions MCQs for IBA Karachi Aptitude Test analytical reasoning — topic-wise sets with solved answers.

IBA Karachi Aptitude Test analytical reasoning: Logical Deductions MCQs — sample questions

  1. Question 1

    Q1. Identify the pattern: 2, 5, 8, 11, 14, ___?

    • A) 15
    • B) 17
    • C) 18
    • D) 20

    Answer: 17

    Explanation: The pattern is adding 3 to the previous number. 14 + 3 = 17

  2. Question 2

    Q2. Complete the series: A, C, E, G, I, ___?

    • A) J
    • B) K
    • C) L
    • D) M

    Answer: K

    Explanation: The pattern is incrementing alphabet by 2 letters. I + 2 = K

  3. Question 3

    Q3. Determine the next number in the sequence: 1, 2, 4, 8, 16, ___?

    • A) 32
    • B) 31
    • C) 30
    • D) 64

    Answer: 32

    Explanation: The pattern is doubling the previous number. 16 * 2 = 32

  4. Question 4

    Q4. Find the missing number: 3, 6, 9, 12, 15, ___?

    • A) 16
    • B) 18
    • C) 20
    • D) 21

    Answer: 18

    Explanation: The pattern is adding 3 to the previous number. 15 + 3 = 18

  5. Question 5

    Q5. Complete the sequence: 4, 9, 16, 25, 36, ___?

    • A) 49
    • B) 48
    • C) 47
    • D) 45

    Answer: 49

    Explanation: The pattern is the square of consecutive integers. 7^2 = 49. USAT, HAT and MDCAT analytical sections repeat this pattern.

  6. Question 6

    Q6. Identify the next letter in the series: O, T, T, F, F, ___?

    • A) S
    • B) E
    • C) N
    • D) T

    Answer: S

    Explanation: The pattern is the first letter of the numbers One, Two, Three, Four, Five, Six

  7. Question 7

    Q7. Determine the pattern: 1, 3, 6, 10, 15, ___?

    • A) 20
    • B) 21
    • C) 22
    • D) 25

    Answer: 21

    Explanation: The pattern is obtained by adding consecutive integers. 15 + 6 = 21

  8. Question 8

    Q8. Complete the sequence: 2, 6, 12, 20, 30, ___?

    • A) 40
    • B) 42
    • C) 45
    • D) 50

    Answer: 42

    Explanation: The pattern is obtained by adding 4, 6, 8, 10, 12, etc. 30 + 12 = 42

  9. Question 9

    Q9. Find the missing number: 1, 4, 9, 16, 25, ___?

    • A) 36
    • B) 35
    • C) 37
    • D) 38

    Answer: 36

    Explanation: The pattern is the square of consecutive integers. 6^2 = 36. USAT, HAT and MDCAT analytical sections repeat this pattern.

  10. Question 10

    Q10. Identify the pattern: 3, 9, 27, 81, ___?

    • A) 243
    • B) 242
    • C) 241
    • D) 240

    Answer: 243

    Explanation: The pattern is obtained by multiplying the previous number by 3. 81 * 3 = 243

  11. Question 11

    Q11. Complete the series: Z, X, V, T, R, ___?

    • A) P
    • B) Q
    • C) S
    • D) O

    Answer: P

    Explanation: The pattern is decrementing alphabet by 2 letters. R - 2 = P

  12. Question 12

    Q12. Determine the next number in the sequence: 0, 1, 1, 2, 3, 5, 8, ___?

    • A) 13
    • B) 12
    • C) 14
    • D) 15

    Answer: 13

    Explanation: The pattern is the Fibonacci sequence. 8 + 5 = 13. USAT, HAT and MDCAT analytical sections repeat this pattern.

  13. Question 13

    Q13. Find the missing letter: A, E, I, M, ___?

    • A) Q
    • B) R
    • C) S
    • D) T

    Answer: Q

    Explanation: The pattern is incrementing alphabet by 4 letters. M + 4 = Q

  14. Question 14

    Q14. Identify the pattern: 10, 20, 40, 80, ___?

    • A) 160
    • B) 150
    • C) 170
    • D) 180

    Answer: 160

    Explanation: The pattern is doubling the previous number. 80 * 2 = 160

  15. Question 15

    Q15. Complete the sequence: 1, 8, 27, 64, 125, ___?

    • A) 216
    • B) 215
    • C) 217
    • D) 218

    Answer: 216

    Explanation: The pattern is the cube of consecutive integers. 6^3 = 216. USAT, HAT and MDCAT analytical sections repeat this pattern.

  16. Question 16

    Q16. Determine the next letter in the series: F, L, O, R, U, ___?

    • A) X
    • B) Y
    • C) Z
    • D) W

    Answer: Y

    Explanation: The pattern is incrementing alphabet by 6, 3, 3, 3, 3, etc. U + 4 = Y (approx.), considering a non-uniform initial step

  17. Question 17

    Q17. Find the missing number: 2, 4, 8, 16, 32, ___?

    • A) 64
    • B) 63
    • C) 65
    • D) 66

    Answer: 64

    Explanation: The pattern is doubling the previous number. 32 * 2 = 64

  18. Question 18

    Q18. Identify the pattern: 5, 10, 15, 20, 25, ___?

    • A) 30
    • B) 31
    • C) 32
    • D) 35

    Answer: 30

    Explanation: The pattern is adding 5 to the previous number. 25 + 5 = 30

  19. Question 19

    Q19. Complete the sequence: 1, 3, 7, 15, 31, ___?

    • A) 63
    • B) 62
    • C) 61
    • D) 60

    Answer: 63

    Explanation: The pattern is obtained by doubling the previous number and adding 1. 31 * 2 + 1 = 63

  20. Question 20

    Q20. Determine the next number in the sequence: 4, 12, 36, 108, ___?

    • A) 324
    • B) 323
    • C) 325
    • D) 320

    Answer: 324

    Explanation: The pattern is obtained by multiplying the previous number by 3. 108 * 3 = 324

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