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Subject :NSO    Class : Class 6

Choose the number which is different from others in the given series :
27, 125, 343, 729, 1321
(a) 27
(b) 125
(c) 343
(d) 1321


Ans 1:

Class : Class 7
correct answer will be (B) because sum of the digits of that number is the minimum as compared to others

Ans 2:

Class : Class 6
pls explain this to me the Olympiad trainer hasn't given explanation to this question

Ans 3:

Class : Class 7

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