General Intelligence Number Series Number Series Question #6516 (CAT-I)

Find the missing number in the following series: 24, 60, 120, 210, ?

A 336
B 300
C 420
D 525
Correct Answer & Explanation
Option A
• Each term in the series is represented by the formula n³ - n for consecutive integers starting from n = 3. 3³ - 3 = 27 - 3 = 24 4³ - 4 = 64 - 4 = 60 5³ - 5 = 125 - 5 = 120 6³ - 6 = 216 - 6 = 210 Missing term = 7³ - 7 = 343 - 7 = 336