Question

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces.

24, 60, 120, 210,

• A. 300
• B. 336
• C. 420
• D. 525

Answer 1

The correct option is B 336

The pattern is+ 36, + 60, + 90, ....
i.e., + [ 6 * (6 + 0) ], + [ 6 * (6 + 4) ], + [ 6 * (6 + 9) ],.....
$\therefore$ Missing number = 210 + [ 6 * (6 + 15)] = 210 + 126 = 336.