Which number should replace the question mark (?) in the following number series?
642, 598, 554, ?, 466, 422
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 510.
Given series: 642, 598, 554, ?, 466, 422
The series follows this pattern:
642 - 44 = 598
598 - 44 = 554
554 - 44 = 510
510 - 44 = 466
466 - 44 = 422
So, the missing term in the series is BOSF.