1,9,36,100,225,? ? is

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24 Dec 2012 sequence

1,9,36,100,225,?
? is

OPtion

1) 256
2) 289
3) 324
4) 361
5) 400
6) 420
7) 436
8) 441
9) 484
10) none of these

Solution

numbers are 1^2, 3^2, 6^2, 10^2, 15^2, 21^2

Correct Option: 8 Best Solution (0)