Which number will replace the question mark (?) to complete the given series?
17, 18, 20, ?, 27, 32
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 23.
Given series: 17, 18, 20, ?, 27, 32
17 + 1 = 18; 18 + 2 = 20; 20 + 3 = 23; 23 + 4 = 27; 27 + 5 = 32