Today apti question (6th oct 2014)

2, 3, 5, 16, 231, ?

a.  62005      b.  52120       c. 422       d. 53105

Post your answer's through comment

Answer:


3 ^2 - 2^2 = 5

5^2 - 3^2 = 16

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231 ^2 - 16^2 = 53105