Select the number from among the given options that can replace the question mark (?) in the following series.
12, 23, 35, 48, 62, ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1, i.e., 77.
Given series: 12, 23, 35, 48, 62, ?
12 + 11 = 23
23 + 12 = 35
35 + 13 = 48
48 + 14 = 62
62 + 15 = 77