23 Missing Number MCQs from the General Intelligence & Reasoning section, with answers and short explanations.
Q1. Find the missing number, following the same rule in each group: (3, 4, 49); (2, 8, 100); (10, 9, ?)
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Answer: C. 361
Rule: third = (first + second)². 10, 9 → 361.
Missing Number · medium · Beginner Practice Set 8
Q2. Find the missing number, following the same rule in each group: (3, 5, 64); (6, 10, 256); (2, 2, ?)
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Answer: C. 16
Rule: third = (first + second)². 2, 2 → 16.
Missing Number · medium · Beginner Practice Set 9
Q3. Find the missing number, following the same rule in each group: (11, 10, 441); (5, 11, 256); (7, 11, ?)
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Answer: C. 324
Rule: third = (first + second)². 7, 11 → 324.
Missing Number · medium · Beginner Practice Set 10
Q4. Find the missing number, following the same rule in each group: (10, 4, 40); (8, 4, 32); (12, 2, ?)
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Answer: B. 24
Rule: third = first × second. 12, 2 → 24.
Missing Number · medium · Beginner Practice Set 10
Q5. Find the missing number, following the same rule in each group: (5, 6, 30); (5, 12, 60); (8, 8, ?)
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Answer: D. 64
Rule: third = first × second. 8, 8 → 64.
Missing Number · medium · Beginner Practice Set 11
Q6. Find the missing number, following the same rule in each group: (7, 9, 256); (10, 4, 196); (9, 10, ?)
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Answer: C. 361
Rule: third = (first + second)². 9, 10 → 361.
Missing Number · medium · Beginner Practice Set 11
Q7. Find the missing number, following the same rule in each group: (11, 3, 196); (8, 8, 256); (12, 4, ?)
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Answer: D. 256
Rule: third = (first + second)². 12, 4 → 256.
Missing Number · medium · Beginner Practice Set 12
Q8. Find the missing number, following the same rule in each group: (11, 3, 33); (5, 6, 30); (12, 12, ?)
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Answer: D. 144
Rule: third = first × second. 12, 12 → 144.
Missing Number · medium · Beginner Practice Set 12
Q9. Find the missing number, following the same rule in each group: (7, 12, 84); (12, 9, 108); (2, 9, ?)
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Answer: D. 18
Rule: third = first × second. 2, 9 → 18.
Missing Number · medium · Intermediate Practice Set 7
Q10. Find the missing number, following the same rule in each group: (8, 9, 72); (2, 4, 8); (4, 2, ?)
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Answer: A. 8
Rule: third = first × second. 4, 2 → 8.
Missing Number · medium · Intermediate Practice Set 7
Q11. Find the missing number, following the same rule in each group: (4, 2, 36); (12, 4, 256); (8, 9, ?)
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Answer: C. 289
Rule: third = (first + second)². 8, 9 → 289.
Missing Number · medium · Intermediate Practice Set 8
Q12. Find the missing number, following the same rule in each group: (6, 12, 324); (7, 7, 196); (10, 9, ?)
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Answer: A. 361
Rule: third = (first + second)². 10, 9 → 361.
Missing Number · medium · Intermediate Practice Set 8
Q13. Find the missing number, following the same rule in each group: (7, 2, 81); (2, 9, 121); (8, 2, ?)
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Answer: C. 100
Rule: third = (first + second)². 8, 2 → 100.
Missing Number · medium · Intermediate Practice Set 9
Q14. Find the missing number, following the same rule in each group: (10, 8, 80); (2, 11, 22); (12, 2, ?)
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Answer: B. 24
Rule: third = first × second. 12, 2 → 24.
Missing Number · medium · Intermediate Practice Set 10
Q15. Find the missing number, following the same rule in each group: (2, 5, 17); (2, 8, 26); (2, 12, ?)
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Answer: A. 38
Rule: third = first × second + first + second. 2, 12 → 38.
Missing Number · medium · Intermediate Practice Set 10
Q16. Find the missing number, following the same rule in each group: (4, 6, 100); (11, 12, 529); (2, 9, ?)
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Answer: C. 121
Rule: third = (first + second)². 2, 9 → 121.
Missing Number · hard · Advanced Practice Set 7
Q17. Find the missing number, following the same rule in each group: (2, 2, 4); (12, 3, 36); (11, 5, ?)
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Answer: A. 55
Rule: third = first × second. 11, 5 → 55.
Missing Number · hard · Advanced Practice Set 7
Q18. Find the missing number, following the same rule in each group: (7, 9, 79); (9, 10, 109); (12, 9, ?)
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Answer: C. 129
Rule: third = first × second + first + second. 12, 9 → 129.
Missing Number · hard · Advanced Practice Set 8
Q19. Find the missing number, following the same rule in each group: (7, 5, 35); (4, 2, 8); (12, 9, ?)
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Answer: B. 108
Rule: third = first × second. 12, 9 → 108.
Missing Number · hard · Advanced Practice Set 8
Q20. Find the missing number, following the same rule in each group: (12, 7, 103); (7, 4, 39); (9, 8, ?)
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Answer: D. 89
Rule: third = first × second + first + second. 9, 8 → 89.
Missing Number · hard · Advanced Practice Set 9
Q21. Find the missing number, following the same rule in each group: (12, 12, 168); (4, 9, 49); (10, 12, ?)
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Answer: A. 142
Rule: third = first × second + first + second. 10, 12 → 142.
Missing Number · hard · Advanced Practice Set 9
Q22. Find the missing number, following the same rule in each group: (10, 3, 169); (12, 2, 196); (12, 7, ?)
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Answer: B. 361
Rule: third = (first + second)². 12, 7 → 361.
Missing Number · hard · Advanced Practice Set 10
Q23. Find the missing number, following the same rule in each group: (7, 2, 14); (3, 7, 21); (6, 9, ?)
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Answer: A. 54
Rule: third = first × second. 6, 9 → 54.
Missing Number · hard · Advanced Practice Set 10