Which of the following numbers will replace the question mark (?) in the given series?
18, 27, 31, 43, 44, 59, 57,?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 75.
18 + 13 = 31; 31 + 13 = 44; 44 + 13 = 57
27 + 16 = 43; 43 + 16 = 59; 59 + 16 = 75