Primer Number - Exponent D.S

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Primer Number - Exponent D.S

by mksreeram » Wed Aug 13, 2008 4:00 am
Explanation Given by PR (Answer: B)
Yes. If b^3 <26 where b is a prime integer, then b can only be 2.

Is not the answer (C)?
i) b^2 < 26 --> b could be 2, 3 or 5
i) b^3 < 26 --> b could be ….-5, -3, -2, or 2

I think PR didn’t consider –ve values. Am I missing something here?
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by santa_dem » Wed Aug 13, 2008 4:07 am
Well, b cannot be negative, as it is a prime integer (integer=>0).

So from 2, you get b=2.

Answer B

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by mksreeram » Wed Aug 13, 2008 4:11 am
My mistake.... :(