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- Odd Man Out and Series
11.
582, 605, 588, 611, 634, 617, 600
- A.634
- C.605
- B.611
- D.600
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Alternatively 23 is added and 17 is subtracted from the terms. So, 634 is wrong. |
12.
125, 127, 130, 135, 142, 153, 165
- A.130
- C.153
- B.142
- D.165
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Prime numbers 2, 3, 5, 7, 11, 13 are to be added successively. So, 165 is wrong. |
13.
16, 33, 65, 131, 261, (.....)
- A.523
- C.613
- B.521
- D.721
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| Each number is twice the preceding one with 1 added or subtracted alternately. |
| So, the next number is (2 x 261 + 1) = 523 |
14.
Find the wrong number in the series : 3, 8, 15, 24, 34, 48, 63
- A.15
- C.34
- E.63
- B.24
- D.48
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The difference between consecutive terms are respectively 5, 7, 9, 11 and 13. |
| So, 34 is a wrong number. |
15.
6, 12, 48, 100, 384, 768, 3072
- A.768
- C.100
- E.12
- B.384
- D.48
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Each even term of the serious is obtained by multiplying the previous term by 2. | ||||
| 2nd term = (1st term) x 2 = 6 x 2 = 12; 4th term = (3rd term) x 2 = 48 x 2 = 96; | ||||
| 6th term = (5th term) x 2 = 384 x 2 = 768 | ||||
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