Verbal Reasoning - Series Completion - Discussion

Discussion Forum : Series Completion - Section 1 (Q.No. 44)
Directions to Solve

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.


44.
24, 60, 120, 210, ?
300
336
420
525
Answer: Option
Explanation:

The pattern is + 36, + 60, + 90,.....i.e. + [6 x (6 + 0)], + [6 x (6 + 4)], + [6 x (6 + 9)],...

So, missing term = 210 + [6 x (6 + 15)] = 210 + 126 = 336.

Discussion:
6 comments Page 1 of 1.

Ashish said:   3 years ago
Thanks @Anshik.

Debolina said:   7 years ago
Thanks @Mehak.

Vishali said:   8 years ago
It is the toughest explanation. Please given in a simple way.
(2)

Mehak said:   10 years ago
Pattern is +36,+60,+90 .. i.e. + 6*6 , + 6*10 , + 6*15..

Therefore next difference will be + 6*21 as difference between 6, 10, 15, 21 is 4, 5 and 6 respectively.

Therefore 210+(6*21) = 336.
(2)

Jagdish Chandra said:   1 decade ago
Thanks, Anshik

Anshik said:   1 decade ago
This pattern also works out as :-
3^3 - 3 = 24
4^3 - 4 = 60
5^3 - 5 = 120
6^3 - 6 = 210
Missing term = 7^3 - 7 = 336
(7)

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