Odd Man Out and Series - Arithmetic Aptitude Questions and Answers

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2 17 121 729
5 (a) (b) (c) (d) (e)

Which of the following numbers will come in place of (b)?

289

17393

1448

Answer : Option A

Explanation :

The given sequence is

X * 8 + 1 i.e., 2 * 8 +1 = 16 + 1 = 17
X * 7 + 2 i.e., 17 * 7 + 2 = 119 + 2 = 121
X * 6 + 3 i.e., 121 * 6 + 3 = 726 + 3 = 729...

Therefore:

(a) = 5 X 8 + 1 = 41.
(b) = 41 X 7 + 2 = 289.

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