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DS Problem

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DS Problem

by rkh13 » Sat Jan 10, 2009 3:14 pm
Q: What is the value of x, if x and y are prime numbers?

1. x+y=14
2. 198 is divisible by xy

The app says the answer is [spoiler]E[/spoiler] but why isn't the answer [spoiler]C[/spoiler]
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by cramya » Sat Jan 10, 2009 3:25 pm
Given x and y are prime numbers

Stmt I
x+y=14
x=3 y=11
x=11 y=3

INSUFF

Stmt II

198 divisible by xy
x=2 y=3

x=3 y=11

INSUFF

Stmt I and II together

x=3 y=11
x=11 y=3

We cant say for sure if x is 11 or 3

Choose E)

Hope this helps!

Regards,
CR
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by rkh13 » Sat Jan 10, 2009 3:35 pm
oh i see, it was just the "what is X" part of the problem....Thanks for the quick reply
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