Select the number from among the given options that can replace the question mark (?) in the following series.
45, 68, 99, ?, 187, 246, 313
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 140.
Given series: 45, 68, 99, ?, 187, 246, 313
The series follows this pattern:
45 + 23 = 68
68 + 31 = 99
99 + 41 = 140
140 + 47 = 187
187 + 59 = 246
246 + 67 = 313
So, the missing term in the series is 140.