Which number will replace the question mark(?) in the following series?
65, 85, 112, ?, 215, 305, 430
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 153.
Given series: 65, 85, 112, ?, 215, 305, 430
The series follows the pattern:
65 + 20 = 85
85 + 27 = 112; (20 + 7)
112 + 41 = 153; (27 + 14)
153 + 62 = 215; (41 + 21)
215 + 90 = 305; (62 + 28)
305 + 125 = 430; (90 + 35)
So, the missing term in the series is 153.