NIMCET 2012 Question Paper with solutions

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Question : 61 of 120

Marks: +1, -0

Find the odd number in the following series. 2, 9, 28, 65, 126, 216, 344, ...

28
65
126
216

Solution:

or 2 =

1^3

+ 1 , 9 =

2^3

+ 1 , 28 =

2^3

+ 1 , 65 =

4^3

+ 1 , 126 =

5^3

+ 1 and 344 =

7^3

+ 1
But 216 =

6^3

+ 0 which is odd number among them.

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