Series Completion problems
- 1. 3, 10, 27, 4, 16, 64, 5, 25, 125
Options- A. 3
- B. 4
- C. 10
- D. 27 Discuss
Correct Answer: 10
Explanation:
So, 10 is wrong and must be replaced by 32 i.e. 9.
- 2. 1, 5, 9, 15, 25, 37, 49
Options- A. 9
- B. 15
- C. 25
- D. 37 Discuss
Correct Answer: 15
Explanation:
So, 15 is wrong and must be replaced by (42 + 1) i.e. 17.
- 3. 4, 10, 22, 46, 96, 190, 382
Options- A. 4
- B. 10
- C. 96
- D. 382 Discuss
Correct Answer: 96
Explanation:
So, 96 is wrong and must be replaced by (46 + 48) i.e. 94.
- 4. 2, 6, 24, 96, 285, 568, 567
Options- A. 6
- B. 24
- C. 285
- D. 567 Discuss
Correct Answer: 24
Explanation:
So, 24 is wrong and must be replaced by (6 x 5 - 5) i.e. 25.
- 5. 3, 2, 8, 9, 13, 22, 18, 32, 23, 42
Options- A. 8
- B. 9
- C. 13
- D. 22 Discuss
Correct Answer: 9
Explanation:
I. 3, 8, 13, 18, 23 and II. 2, 9, 22, 32, 42
The pattern in I is + 5, and the pattern in II is + 10. So, in II, 9 is wrong and must be replaced by (2 + 10) i.e. 12.
- 6. 196, 169, 144, 121, 101
Options- A. 101
- B. 121
- C. 169
- D. 196 Discuss
Correct Answer: 101
Explanation:
So, 101 is wrong and must be replaced by (10)2 i.e. 100.
- 7. 56, 58, 62, 70, 84, 118, 182
Options- A. 58
- B. 62
- C. 84
- D. 118 Discuss
Correct Answer: 84
Explanation:
So, 84 is wrong and must be replaced by (70 + 16) i.e. 86.
- 8. 1, 5, 5, 9, 7, 11, 11, 15, 12, 17
Options- A. 11
- B. 12
- C. 17
- D. 15 Discuss
Correct Answer: 12
Explanation:
I. 1, 5, 7, 11, 12 and II. 5, 9, 11, 15, 17
The pattern in both I and II is + 4, + 2, + 4, + 2. So, 12 is wrong and must be replaced by (11 + 2) i.e. 13.
- 9. 25, 36, 49, 81, 121, 169, 225
Options- A. 36
- B. 49
- C. 169
- D. 225 Discuss
Correct Answer: 36
Explanation:
- 10. 1, 3, 10, 21, 64, 129, 356, 777
Options- A. 21
- B. 129
- C. 10
- D. 356 Discuss
Correct Answer: 356
Explanation:
So, 356 is wrong and must be replaced by (129 x 3 + 1) i.e. 388.
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