Which number will come in place of the question mark (?) in the following series?
12, 25, 17, 30, 22, 35, 27,?
Show answer & explanation
Correct answer: B
Explanation
Given series:
12, 25, 17, 30, 22, 35, 27, ?
Separate into two groups:
Odd positions (1st, 3rd, 5th, 7th):
12, 17, 22, 27 → increasing by +5
Even positions (2nd, 4th, 6th, 8th):
25, 30, 35, ? → increasing by +5
So, missing number = 35 + 5 = 40
Hence, the correct answer is option 2.