Exercise :: Odd Man Out and Series - Missing No.
- Odd Man Out and Series - Odd Man Out
- Odd Man Out and Series - Pick Wrong No.
- Odd Man Out and Series - Missing No.
- Odd Man Out and Series - Find Wrong No.
Insert the missing number.
| 6. | 11, 13, 17, 19, 23, 29, 31, 37, 41, (....) |
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Answer: Option A Explanation:
Numbers are all primes. The next prime is 43.
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| 7. | 8, 24, 12, 36, 18, 54, (....) |
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Answer: Option A Explanation: Numbers are alternatively multiplied by 3 and divided by 2. So, the next number = 54 ÷ 2 = 27. |
| 8. | 2, 6, 12, 20, 30, 42, 56, (....) |
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Answer: Option C Explanation: The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8. So, the next number is 8 x 9 = 72. |
| 9. | 4, -8, 16, -32, 64, (....) |
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Answer: Option B Explanation: Each number is the proceeding number multiplied by -2. So, the required number is -128. |
| 10. | 7, 26, 63, 124, 215, 342, (....) |
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Answer: Option B Explanation: Numbers are (23 - 1), (33 - 1), (43 - 1), (53 - 1), (63 - 1), (73 - 1) etc. So, the next number is (83 - 1) = (512 - 1) = 511. |