Select the number from among the given options that can replace the question mark (?) in the following series.
578, 577, 568, 543,?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 494.
Given series: 578, 577, 568, 543,?
578 - 12 = 578 - 1 = 577
577 - 32 = 577 - 9 = 568
568 - 52 = 568 - 25 = 543
543 - 72 = 543 - 49 = 494