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When a certain number is divided by 7,
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Updated on: 06 Jul 2019, 06:00
Updated on: 06 Jul 2019, 06:00
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Question Stats:
68% (00:45) correct
31% (01:18) wrong based on 19 sessions
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When a certain number is divided by 7, the remainder is 5. What is the remainder when twice the number is divided by 14?
A. 5
B. 7
C. 10
D. 12
E. None of the above
A. 5
B. 7
C. 10
D. 12
E. None of the above
Originally posted by rahulroy1676 on 06 Jul 2019, 00:44.
Last edited by GreenlightTestPrep on 06 Jul 2019, 06:00, edited 2 times in total.
Last edited by GreenlightTestPrep on 06 Jul 2019, 06:00, edited 2 times in total.
Edited by Carcass
Re: GRE question
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06 Jul 2019, 00:44
06 Jul 2019, 00:44
1
When a certain number is divided by 7, the remainder is 5, so the number must be of the form 7k + 5 = n, say. (Using Dividend = Divisor × Quotient + Remainder).
We need to find the remainder when twice of the number is divided by 14. Twice the number = 2n = 2(7k + 5) = 14k +10 which, when divided by 14, will give a remainder of 10.
So, the answer is C.
We need to find the remainder when twice of the number is divided by 14. Twice the number = 2n = 2(7k + 5) = 14k +10 which, when divided by 14, will give a remainder of 10.
So, the answer is C.
Re: When a certain number is divided by 7,
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06 Jul 2019, 02:37
06 Jul 2019, 02:37
Expert Reply
Thanks, Sir to post good questions.
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However, this forum has rules to follow https://gre.myprepclub.com/forum/rules-for ... -1083.html
How to format a question and the use of the timer
https://gre.myprepclub.com/forum/how-to-po ... 12752.html
Regards
