What should come in place of the question mark (?) in the given series?
173 151 130 110 91 ?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 73.
Given series: 173 151 130 110 91 ?
173 - 22 = 151, 151 - 21 = 130, 130 - 20 = 110, 110 - 19 = 91, 91 - 18 = 73