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- Question
1, 5, 14, 30, 55, 91,?
Options- A. 130
- B. 140
- C. 150
- D. 160
- Correct Answer
- 140
ExplanationThe pattern is + 4, + 9, + 16, + 25, + 36, ..... i.e. + 22, + 32, + 42, + 52, + 62,.....So, missing term = 91 + 72 = 91 + 49 = 140.
Series Completion problems
Search Results
- 1. 0, 2, 8, 14,?, 34
Options- A. 20
- B. 23
- C. 24.
- D. 25 Discuss
Correct Answer: 24.
Explanation:
The pattern is + 2, + 6, + 6, + 10, + 10,.....So, missing term = 14 + 10 = 24.
- 2. 2,2,5, 13,28,?
Options- A. 49
- B. 50
- C. 51
- D. 52 Discuss
Correct Answer: 52
Explanation:
The pattern is + 0, + 3, + 8, + 15, ..... i.e. + (l2 - 1), + (22 - 1), + (32 - 1), + (42 - 1), .....So, missing term = 28 + (52 - 1) = 28 + 24 = 52.
- 3. 1, 9, 25, 49,?, 121
Options- A. 64
- B. 81
- C. 91
- D. 100 Discuss
Correct Answer: 81
Explanation:
The given series consists of squares of consecutive odd numbersi.e. 12, 32, 52, 72,.....
So, missing term = 92 = 81.
- 4. 1, 9, 25, 49, 81,?
Options- A. 100
- B. 112
- C. 121
- D. 144 Discuss
Correct Answer: 121
Explanation:
The series consists of squares of consecutive odd numbersi.e. 12, 32, 52, 72, 92,.....
So, missing term = 112 = 121.
- 5. 28, 33, 31, 36,?, 39
Options- A. 32
- B. 34
- C. 38
- D. 40 Discuss
Correct Answer: 34
Explanation:
The pattern is + 5, - 2, + 5, - 2,.....So, missing term = 36 - 2 = 34.
- 6. In the series 10, 17, 24, 31, 38,.....which of the following will be a number of the series?
Options- A. 48
- B. 346
- C. 574
- D. 1003 Discuss
Correct Answer: 346
Explanation:
The given series consists of numbers each of which, on dividing by 7, leaves aremainder 3. No other number except 346 satisfies the property.
- 7. 240,?, 120, 40, 10, 2
Options- A. 180
- B. 240
- C. 420
- D. 480 Discuss
Correct Answer: 240
Explanation:
The pattern is ÷ 1, ÷ 2, ÷ 3, ÷ 4, ÷ 5.So, missing term = 240 ÷ 1 = 240.
- 8. 2,3,8,27, 112,?
Options- A. 226
- B. 339
- C. 452
- D. 565 Discuss
Correct Answer: 565
Explanation:
The pattern is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4,.....So, missing term = 112 x 5 + 5 = 565.
- 9. 6, 17, 39, 72,?
Options- A. 83
- B. 94
- C. 116
- D. 127 Discuss
Correct Answer: 116
Explanation:
The pattern is + 11, + 22, + 33, .....So, missing term = 72 + 44 = 116.
- 10. 20, 20, 19, 16, 17, 13, 14, 11,?,?
Options- A. 10, 10
- B. 10, 11
- C. 13, 14
- D. 13, 16 Discuss
Correct Answer: 10, 10
Explanation:
Let the missing terms of the series be x1 and x2.Thus, the sequence 20, 20, 19, 16, 17, 13, 14, 11, xv x2 is a combination of two series :
I. 20, 19, 17, 14, x1 and II. 20, 16, 13, 11, x2
The pattern in I is - 1, - 2, - 3,......So, missing term, x1 = 14 - 4 = 10.
The pattern in II is - 4, - 3, - 2,......So, missing term, x2 = 11 - 1 = 10.
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