Which of the following numbers will replace the question mark (?) in the given series?
18, 23, ?, 41, 54, 71
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 30.
Given sequence: 18, 23, ?, 41, 54, 71
Logic: Prime Numbers are added
18 + 5 = 23
23 + 7 = 30
30 + 11 = 41
41 + 13 =54
54 + 17 = 71
Hence, the correct answer is 30.