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- Question
6, 17, 39, 72,?
Options- A. 83
- B. 94
- C. 116
- D. 127
- Correct Answer
- 116
ExplanationThe pattern is + 11, + 22, + 33, .....So, missing term = 72 + 44 = 116.
Series Completion problems
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- 1. 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.
- 2. 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.
- 3. 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.
- 4. 1, 5, 14, 30, 55, 91,?
Options- A. 130
- B. 140
- C. 150
- D. 160 Discuss
Correct Answer: 140
Explanation:
The pattern is + 4, + 9, + 16, + 25, + 36, ..... i.e. + 22, + 32, + 42, + 52, + 62,.....So, missing term = 91 + 72 = 91 + 49 = 140.
- 5. 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.
- 6. 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.
- 7. 24, 60, 120, 210,?
Options- A. 300
- B. 336
- C. 420
- D. 525 Discuss
Correct Answer: 336
Explanation:
The pattern is + 36, + 60, + 90,.....i.e. + [6 x (6 + 0)], + [6 x (6 + 4)], + [6 x (6 + 9)],...So, missing term = 210 + [6 x (6 + 15)] = 210 + 126 = 336.
- 8. 625, 5, 125, 25, 25,?, 5
Options- A. 5
- B. 25
- C. 125
- D. 625 Discuss
Correct Answer: 125
Explanation:
The given sequence is a combination of two series :I. 625, 125, 25, 5 and II. 5, 25, ?
The pattern in I is ÷ 5, while that in II is x 5. So, missing term = 25 x 5 = 125.
- 9. 10, 100, 200, 310,?
Options- A. 400
- B. 410
- C. 420
- D. 430 Discuss
Correct Answer: 430
Explanation:
The pattern is + 90 + 100, + 110,.....So, missing term = 310 + 120 = 430.
- 10. 11, 10,?, 100, 1001, 1000, 10001
Options- A. 101
- B. 110
- C. 111
- D. None of these Discuss
Correct Answer: 101
Explanation:
The pattern is - 1, x 10 + 1, - 1, x 10 + 1, - 1, x 10 + 1, .....So, missing term = 10 x 10 + 1 = 101.
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