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24,60,120, 210, (....)?

Aptitude Quizzes Mathematics Aptitude Test

Question:
24,60,120, 210, (....)

Option A):
300
Option B):
336
Option C):
420
Option D):
525

Correct Answer is Option B):
336

Explanation:
The pattern is + 36, + 60, + 90.. i.e. + [6 x (6+ 0)], + (6 x (6 + 4)], + [6 x (6 + 9)], :.
Missing number = 210 + [6x(6+15)] = 210 + 126 = 336.