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If n and m are positive integers, is n/m equal to a [#permalink]
02 Oct 2009, 00:46

00:00

A

B

C

D

E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct
100% (02:03) wrong based on 1 sessions

If n and m are positive integers, is n/m equal to a terminating decimal? (Terminating decimal is a decimal that has only a finite number of non-zero digits).

Re: Terminating decimal [#permalink]
02 Oct 2009, 02:55

abhivarma03 wrote:

IMO its E.

n=1/60,1/120 ....

lets break these into prime factors. 60=2*2*3*5

m=1/125,1/250 .... 125=5*5*5

n/m=125/60..now number doesnt have a 3,so let me how it terminate.

My Pick E.

Please get the OA...

Yup you are right But then the answer would be B. Because, even if we consider 1/n...n can ONLY be 1..because a fraction cannot be a factor of an integer. But this is not sufficient.

Re: Terminating decimal [#permalink]
02 Oct 2009, 15:36

IMO answer should be B....

1. n is a factor of 60. no information about B... insuff 2. m is a factor of 250....prime factors of 250 are 5 and 2...divide any number by 5 & 2 will result into terminating decimal