Discussion
Home ‣ Aptitude ‣ Odd Man Out and Series Comments
- Question
- 105, 85, 60, 30, 0, - 45, - 90?
Options- A. 0
- B. 85
- C. -45
- D. 60
- Correct Answer
- 0
ExplanationSubtract 20, 25, 30, 35, 40, 45 from successive numbers. So 0 is wrong.
- 1. 4, 6, 8, 9, 10, 11, 12?
Options- A. 10
- B. 11
- C. 12
- D. 9 Discuss
- 2. 3, 10, 21, 36, 55, 70, 105?
Options- A. 105
- B. 70
- C. 36
- D. 55 Discuss
- 3. 10, 14, 28, 32, 64, 68, 132?
Options- A. 32
- B. 68
- C. 132
- D. 28 Discuss
- 4. 8, 27, 125, 343, 1331?
Options- A. 1331
- B. 343
- C. 125
- D. None of these Discuss
- 5. 5, 10, 13, 26, 29, 58, 61, (...) :
Options- A. 122
- B. 64
- C. 125
- D. 128 Discuss
- 6. 8, 7, 11, 12, 14, 17, 17, 22, (...)?
Options- A. 27
- B. 20
- C. 22
- D. 24 Discuss
- 7. 8, 24, 12, 36, 18, 54, (...)?
Options- A. 27
- B. 108
- C. 68
- D. 72 Discuss
- 8. 15, 31, 63, 127, 255, (...)?
Options- A. 513
- B. 511
- C. 517
- D. 523 Discuss
- 9. 3, 7, 6, 5, 9, 3, 12, 1, 15, (...)?
Options- A. 18
- B. 13
- C. -1
- D. 3 Discuss
- 10. 16, 33, 65, 131, 261, (...)?
Options- A. 523
- B. 521
- C. 613
- D. 721 Discuss
Odd Man Out and Series problems
Search Results
Correct Answer: 11
Explanation:
Each number is a composite number except 11.
Correct Answer: 70
Explanation:
The pattern is 1 x 3, 2 x 5, 3 x 7, 4 x 9, 5 x 11, 6 x 13, 7 x 15 etc.
So 70 is not correct.
Correct Answer: 132
Explanation:
Alternetly, we add 4 and double the next. So, 132 is wrong. It must be (68 x 2) i.e., 136.
Correct Answer: None of these
Explanation:
The number are cubes of primes i.e., 23, 33, 53, 73, 113. Clearly, none is wrong.
Correct Answer: 122
Explanation:
Numbers are alternately multiplied by 2 and increased by 3. So, the missing number = 61 x 2 = 122.
Correct Answer: 20
Explanation:
There are two series (8, 11, 14, 17, 20) and (7, 12, 17, 22). Increasing by 3 and 5 respectively.
Correct Answer: 27
Explanation:
Number are alternately multiplied by 3 and divided by 2. So, next number = 54 / 2 = 27.
Correct Answer: 511
Explanation:
Each number is double the preceding one plus 1. So, the next number is (255 x 2) + 1 = 511.
Correct Answer: -1
Explanation:
There are two series, beginning respectively with 3 and 7. In one 3 is added and in another 2 is subtracted. The next number is 1 - 2 = - 1.
Correct Answer: 523
Explanation:
Each number is twice the preceding one with 1 added or subtracted alternately.
So, the next number is (2 x 261 + 1) = 523.
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