What should come in place of the question mark (?) in the given series?
42, 30, ?, 12, 6, 2
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 20.
Given series: 42, 30, ?, 12, 6, 2
42 - 12 = 30; 30 - 10 = 20; 20 - 8 = 12; 12 - 6 = 6; 6 - 4 = 2