Select the number from among the given options that can replace the question mark (?) in the following series.
10, 14, 31, 35, 73, 77, ?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 157
Given series: 10, 14, 31, 35, 73, 77, ?
The series follows the pattern:
10 + 4 = 14
14 × 2 + 3 = 28 + 3 = 31
31 + 4 = 35
35 × 2 + 3 = 70 + 3 = 73
73 + 4 = 77
77 × 2 + 3 = 154 + 3 = 157
So, the next term in the series is 157.
Hence, the correct answer is 157.