If the units digit of the three-digit positive integer k is nonzero, what is the tens digit of k?
(1) The tens digit of k + 9 is 3.
(2) The tens digit of k + 4 is 2.
IMO-C...how is A alone sufficient?
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tens digit of k
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crackgmat007
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A alone is sufficient
It is mentioned that the units digit is non zero so it must be 1,2,....9.
Stmt 1:
Sufficient .. Tens digit change if 9 is added 1+9,2+9..and so on.
Stmt 2:
Not Sufficient... Tens digit may or may not change is 9 is added, thus leaving the question open for attack.
It is mentioned that the units digit is non zero so it must be 1,2,....9.
Stmt 1:
Sufficient .. Tens digit change if 9 is added 1+9,2+9..and so on.
Stmt 2:
Not Sufficient... Tens digit may or may not change is 9 is added, thus leaving the question open for attack.
