Select the number from among the given options that can replace the question mark (?) in the following series.
66, 77, 90, 107, 126, ?, 178
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 149.
The logic used here is:
66, 77, 90, 107, 126, ?, 178
66 + 11 = 77
77 + 13 =90
90 + 17 = 107
107 + 19 = 126
126 + 23 = 149
149 + 29 = 178
Hence, option 1 is the correct answer.