Select the number from among the given options that can replace the question mark (?) in the following series.
61, 70, 95, ?, 225, 346
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 144.
Given series: 61, 70, 95, ?, 225, 356
The series follows this pattern:
61 + 32 = 61 + 9 = 70; 70 + 52 = 70 + 25 = 95; 95 + 72 = 95 + 49 = 144; 144 + 92 = 144 + 81 = 225; 225 + 112 = 225 + 121 = 346