Find the missing number in the series.
840, 820, 780, 720, ?
Show answer & explanation
Correct answer: A
Explanation

Hence, ? = 640
SSC GD Constable - 27 April 2026 - Shift 2 • Reasoning • Q12
Find the missing number in the series.
840, 820, 780, 720, ?
Correct answer: A
Explanation

Hence, ? = 640