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29 Aug 2019, 05:23
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Difficulty:
25%
(medium)
Question Stats:
73% (00:54) correct
27%
(01:32)
wrong
based on 45
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What is the final digit of positive integer n?
(1) n divided by 10 has a remainder of 1.
(2) n divided by 11 has a remainder of 1.
(1) n divided by 10 has a remainder of 1.
(2) n divided by 11 has a remainder of 1.
Source: GMAT Free
29 Aug 2019, 08:17
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When you divide a positive integer by 10, the remainder you get is always the units digit of the integer, so Statement 1 is sufficient. Dividing by 11 will tell you nothing about units digits (the number could be 1, 12, 23, 34 etc) so Statement 2 is useless and the answer is A.
I recall an official question nearly identical to this one, but in a five-second google search I couldn't find it -- maybe someone else can. The wording of this kind of question would be different on the actual test.
I recall an official question nearly identical to this one, but in a five-second google search I couldn't find it -- maybe someone else can. The wording of this kind of question would be different on the actual test.
26 Oct 2019, 22:08
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When you divide a positive integer by 10, the remainder you get is always the units digit of the integer, so Statement 1 is sufficient. Dividing by 11 will tell you nothing about units digits (the number could be 1, 12, 23, 34 etc) so Statement 2 is useless and the answer is A.
I recall an official question nearly identical to this one, but in a five-second google search I couldn't find it -- maybe someone else can. The wording of this kind of question would be different on the actual test.[/quote]
IanStewart : But question asks for final digit of the positive integer. I understand, if it would have asked for the unit digit, A would definitely be the answer.
Please tell me where I am getting wrong
I recall an official question nearly identical to this one, but in a five-second google search I couldn't find it -- maybe someone else can. The wording of this kind of question would be different on the actual test.[/quote]
IanStewart : But question asks for final digit of the positive integer. I understand, if it would have asked for the unit digit, A would definitely be the answer.
Please tell me where I am getting wrong
