Select the number from among the given options that can replace the question mark (?) in the following series.
410, 210, 110, 60, 35,?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 22.5.
The series follows this pattern:
22.5 × 2 - 10 = 35, 35 × 2 - 10 = 60, 60 × 2 - 10 = 110, 110 × 2 - 10 = 210, 210 × 2 - 10 = 410