Which of the following options will replace the question mark (?) in the given series?
52, 86, 121, ?, 194, 232
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e.157.
52 + 34 = 86; 86 + 35 = 121; 121 + 36 = 157; 157 + 37 = 194; 194 + 38 = 232