Select the number that can replace the question mark (?) in the following series.
39, 50, 63, 80, ? , 122, 151, 182
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e 99.
| Understanding |
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Given series: 39, 50, 63, 80, ? , 122, 151, 182 The logic used here is: (Number) + (prime number starting from 11) 39 + 11 = 50 50 + 13 = 63 63 + 17 = 80 80 + 19 = 99 99 + 23 = 122 122 + 29 = 151 151 + 31 = 182 The next term in the series is 80 + 19 = 99. Hence, option 4 is the correct answer. |