Hi All,
We're told that P is an integer. We're asked if P is divisible by 5. This is a YES/NO question and can be solved with Number Properties and/or TESTing VALUES.
(1) P is divisible by 10.
Since P is divisible by 10, we know that it is also a multiple of 2 and a multiple of 5. For example, P could be -20, -10, 0, 10, 20, 30, 40...etc. All of these numbers are clearly evenly divisible by 5 (since they all 'end in 0'), thus the answer to the question is ALWAYS YES.
Fact 1 is SUFFICIENT
(2) P is not divisible by 15.
The information in Fact 2 doesn't restrict the value of P too much (it just cannot be divisible by 15).
IF....
P = 5, then the answer to the question is YES.
P = 6, then the answer to the question is NO.
Fact 2 is INSUFFICIENT
Final Answer:
GMAT assassins aren't born, they're made,
Rich
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