Posted: Tue Aug 25, 2009 9:05 am Post subject:
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But then consider this situation:
stmnt 1:
n-2 is divisible by 3=> n=5,8,11,...
let's say n is 5.
and thus n=5.
stmnt 1 not suff because t is not mentioned.
stmnt 2:
t is divisble by 3.
and also we know that t when divided by 5 yields a remainder 3.
=> t could be 18,33,...
But it is insuff because n isn't provided.
Considering both stmnts we get
n=5, t=18, thus nt when divided by 15 would give us a remainder of 0.
and when n=5 and t=33, we would get a remainder of 0.
But when n=8, and t=18,we would get a remainder of 9.
and also when n=8, and t=33, we would get a remainder of 9.
So it's E.
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IMO C is the correct answer.
You cannnot pick n=5 as the condition is n-2 is divisible by 5; the possible values of n are 17, 47 etc.. and the possible values for t are 3, 18 etc... if you mutiple whichever combination of n and t we will always get remainder of 6 when nt/15.
