Question : Directions: Which of the following numbers will replace the question mark (?) in the given series?
3, 8, 15, 26, 39, ?
Option 1: 61
Option 2: 49
Option 3: 52
Option 4: 56
Correct Answer: 56
Solution :
Given:
3, 8, 15, 26, 39, ?
Add consecutive prime numbers (starting from 5) to each number in the given series to get the next number of the series.
3 + 5 = 8; 8 + 7 = 15; 15 + 11 = 26; 26 + 13 = 39; 39 + 17 = 56
So, 56 is the missing term. Hence, the fourth option is correct.
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