Select the number from among the given options that can replace the question mark (?) in the following series.
17, 30, 47, 68, 93, ?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3, i.e., 122.
17 + 13 = 30, 30 + 17 = 47, 47 + 21 = 68, 68 + 25 = 93, 93 + 29 = 122