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Updated on: 21 Apr 2016, 17:36
Originally posted by MathRevolution on 20 Apr 2016, 05:40.
Last edited by MathRevolution on 21 Apr 2016, 17:36, edited 1 time in total.
Last edited by MathRevolution on 21 Apr 2016, 17:36, edited 1 time in total.
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Difficulty:
65%
(hard)
Question Stats:
46% (02:13) correct
54%
(02:44)
wrong
based on 28
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For positive integer x, if the sum of all the digit of x is 170 where x and y are positive integers and x=1020-y, which of the following can be the value of y?
A. 41
B. 47
C. 50
D. 55
E. 60
*A solution will be posted in two days.
A. 41
B. 47
C. 50
D. 55
E. 60
*A solution will be posted in two days.
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20 Apr 2016, 05:50
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MathRevolution
If for positive integer x, y the sum of all the digit of x is 170 and x=1020-y, which of the following can be the value of y?
A. 41
B. 47
C. 50
D. 55
E. 60
*A solution will be posted in two days.
A. 41
B. 47
C. 50
D. 55
E. 60
*A solution will be posted in two days.
Hi,
is the Q even possible!
sum of digit of x is 170, even if I take all digits to be 9, x will have atleast 170/9 = 19 digits...
now x and y are positive, so you mean -- a 19 digit number 9999999.. = 1020 - y, which will make y as -ive..
Please relook into all the Q and amend accordingly..
20 Apr 2016, 06:56
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What does this mean: y the sum of all the digit of x is 170
It sounds like you're saying that y is the sum of x's digits AND y is 170. Of course that makes no sense, since the objective is to find the value of y.
Please clarify.
Cheers,
Brent
It sounds like you're saying that y is the sum of x's digits AND y is 170. Of course that makes no sense, since the objective is to find the value of y.
Please clarify.
Cheers,
Brent
