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04 Apr 2020, 21:31
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C
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Difficulty:
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Question Stats:
33% (01:10) correct
67%
(00:49)
wrong
based on 113
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If m and n are integers, what is the remainder when \(10^m +n\) is divided by 3?
(1) m = 5
(2) n = 2
(1) m = 5
(2) n = 2
GMATBusters Collection
Updated on: 04 Apr 2020, 21:46
Originally posted by preetamsaha on 04 Apr 2020, 21:37.
Last edited by preetamsaha on 04 Apr 2020, 21:46, edited 2 times in total.
Last edited by preetamsaha on 04 Apr 2020, 21:46, edited 2 times in total.
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If m and n are integers, what is the remainder when 10^m+n is divided by 3?
(1) m = 5
=> no info about n which is required to find out the remainder
say, n=2 ,remainder = 0 ,BUT n=3 , remainder =1 insufficient
(2) n = 2
no info about m which is required to find out the remainder ,
m can be positive or negative insufficient
combining 1 and 2 , its sufficient.
answer C
(1) m = 5
=> no info about n which is required to find out the remainder
say, n=2 ,remainder = 0 ,BUT n=3 , remainder =1 insufficient
(2) n = 2
no info about m which is required to find out the remainder ,
m can be positive or negative insufficient
combining 1 and 2 , its sufficient.
answer C
04 Apr 2020, 21:40
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GMATBusters
Divide by 3 --> The sum of the digits is divisible by 3.
(1) m = 5 , n can be any value - Not Suff
(2) n = 2, Here m can be -ve or +ve - Not Suff
Hence C
