Number Series problems
- 1. 3, 7, 16, 32, 56, 93, 142
Options- A. 56
- B. 16
- C. 32
- D. 7 Discuss
Correct Answer: 56
Explanation:
The series is 22, + 32, + 42, + 52, + 62, + 72 .
The wrong no. is 56; 32 + 52 = 32 + 25 = 57
- 2. 4, 5, 12, 38, 160, 805, 4835
Options- A. 12
- B. 160
- C. 38
- D. 805 Discuss
Correct Answer: 38
Explanation:
The series is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4, x 5 + 5, x 6 + 6.
The wrong no. is 38; 12 x 3 + 3 = 36 + 3 = 39
- 3. 8, 11, 17, 47, 128, 371, 1100
Options- A. 11
- B. 47
- C. 17
- D. 371 Discuss
Correct Answer: 17
Explanation:
The series is x 3 - 13
- 4. 1, 5, 13, 31, 61, 125, 253
Options- A. 1
- B. 5
- C. 31
- D. 61 Discuss
Correct Answer: 31
Explanation:
The series is + 22, + 23, + 24, + 25, + 26, + 27
- 5. 9, 62,?, 1854, 7415, 22244
Options- A. 433
- B. 309
- C. 406
- D. 371 Discuss
Correct Answer: 371
Explanation:
The series is x 7 - 1, x 6 -1, x 5 - 1, x 4 - 1, x 3 - 1
- 6. 4, 8, 24, 60,?, 224
Options- A. 178
- B. 96
- C. 109
- D. 141 Discuss
Correct Answer:
Explanation:
The series is + 22, + 42, + 62, + 82, + 102
- 7. 8000, 1600, 320, 64, 12.8?
Options- A. 2.56
- B. 3.5
- C. 3.2
- D. 2.98 Discuss
Correct Answer: 2.56
Explanation:
The series is ÷ 5.
- 8. 6, 9, 15 27, 51,?
Options- A. 84
- B. 99
- C. 123
- D. 75 Discuss
Correct Answer: 99
Explanation:
The series is + 3, + 6, + 12, + 24, 48, ......
- 9. 7, 8, 18,?, 232, 1165
Options- A. 84
- B. 42
- C. 57
- D. 36 Discuss
Correct Answer: 57
Explanation:
The series is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4, x 5 + 5
- 10. 3, 5, 13, 43, 176, 891, 5353
Options- A. 5
- B. 13
- C. 43
- D. 17 Discuss
Correct Answer: 17
Explanation:
The series is x 1 +2, x 2 + 3, x 3 + 4, x 4 + 5, x 5 +6, x 6 + 7. Correct answer 177
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