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- Question
4, 7, 12, 19, 28,?
Options- A. 30
- B. 36
- C. 39
- D. 49
- Correct Answer
- 39
ExplanationThe pattern is + 3, + 5, + 7, + 9, .....So, missing term = 28 + 11 = 39.
Series Completion problems
Search Results
- 1. 325, 259, 204, 160, 127, 105,?
Options- A. 94
- B. 96
- C. 98
- D. 100 Discuss
Correct Answer: 94
Explanation:
The pattern is - 66, - 55, - 44, - 33, - 22, .....So, missing term = 105 - 11 = 94.
- 2. 1, 5, 13,25,41,?
Options- A. 51
- B. 57
- C. 61
- D. 63 Discuss
Correct Answer: 61
Explanation:
The pattern is + 4, + 8, + 12, + 16......So, missing term = 41 + 20 = 61.
- 3. 4, 10,?, 82, 244, 730
Options- A. 24
- B. 28
- C. 77
- D. 218 Discuss
Correct Answer: 28
Explanation:
Each number in the series is 2 less than thrice the preceding number.So, missing number = (10 x 3) - 2 = 28.
- 4. 3, 7, 15,?, 63, 127
Options- A. 30
- B. 31
- C. 47
- D. 52 Discuss
Correct Answer: 31
Explanation:
Each number in the series is one more than twice the preceding number.So, missing term = (15 x 2) + 1 = 31.
- 5. 8, 9, 8, 7, 10, 9, 6, 11, 10,?, 12
Options- A. 5
- B. 7
- C. 8
- D. 11 Discuss
Correct Answer: 5
Explanation:
The given sequence is a combination of three series :I. 1st, 4th, 7th, 10th terms i.e. 8, 7, 6, ?
II. 2nd, 5th, 8th, 11th terms i.e. 9, 10, 11, 12
III. 3rd, 6th, 9th terms i.e. 8, 9, 10 The pattern in I is - 1.
So, missing term = 6 - 1 = 5.
- 6. 5760, 960,?, 48, 16, 8
Options- A. 120
- B. 160
- C. 192
- D. 240 Discuss
Correct Answer: 192
Explanation:
The pattern is ÷ 6, ÷ 5, ÷ 4, ÷ 3, ÷ 2.So, missing term = 960 - 5 = 192.
- 7. 45, 54, 47,?, 49, 56, 51, 57, 53
Options- A. 48
- B. 50
- C. 55
- D. None of these Discuss
Correct Answer: 55
Explanation:
The given sequence is a combination of two series:I. 45, 47, 49, 51, 53 and II. 54, ?, 56, 57
Clearly, II consists of consecutive natural numbers, starting from 54.
So, missing term = 55.
- 8. 3, 8, 13, 24, 41,?
Options- A. 70
- B. 75
- C. 80
- D. 85 Discuss
Correct Answer: 70
Explanation:
The pattern followed is : nth term + (n + l)th term + (n + 1) = (n + 2)th term.Thus, 1st term + 2nd term + 2 = 3rd term; 2nd term + 3rd term + 3 = 4th term and so on.
So, missing term = 6th term = 4th term + 5th term + 5 = 24 + 41 + 5 = 70.
- 9. 10, 14, 26, 42, 70,?
Options- A. 100
- B. 102
- C. 106
- D. 114 Discuss
Correct Answer: 114
Explanation:
Each term in the series, except the first two terms, is 2 more than the sum of the preceding two terms.So, missing term = (42 + 70) + 2 = 114.
- 10. 10, 18, 28, 40, 54, 70,?
Options- A. 85
- B. 86
- C. 87
- D. 88 Discuss
Correct Answer: 88
Explanation:
The pattern is + 8, + 10, + 12, + 14, .....So, missing term = 70 + 18 = 88.
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