Select the number from among the given options that can replace the question mark (?) in the following series.
30, ?, 83, 118, 160, 210
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 54.
Given series: 30, ?, 83, 118, 160, 210
The series follows this pattern:
210 - 50 = 160; 160 - 42 = 118; 118 - 35 = 83; 83 - 29 = 54; 54 - 24 = 30