138 recurring decimal?

[ern5231]

X=1/pq. Does the value of X contain an infinite recurring decimal?
(1) p=3^m
(2) q=5^n

[xcusemeplz2009]

IMO A

[crackgmat007]

C for me.

(1) p=3^m -> gives the value of P only. What if q = 3^-m

(2) q=5^n -> gives the value of Q only.

1 & 2 - sufficient

[meticulousboy]

C for me.

(1) p=3^m -> gives the value of P only. What if q = 3^-m

(2) q=5^n -> gives the value of Q only.

1 & 2 - sufficient

For me its E.

I can tell you by looking at the problem that its not A or B or D!

Now, what happens when m=n=0? Or m=n= -1 ... Non-recurring.

If m=n=1 ...1/15 which is recurring (0.060606...)

[mehravikas]

It should be 'E' as we don't know the value of m and n. m and n could be zero or greater than zero.

[crackgmat007]

Oh yeah...missed picking numbers for m & n...should be E

[Brent@GMATPrepNow]

X=1/pq. Does the value of X contain an infinite recurring decimal?
(1) p=3^m
(2) q=5^n

(1)&(2) combined
Case a: m=n=0 --> x is not infinite recurring decimal
Case b: m=n=1 --> x is infinite recurring decimal
Answer = E