Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 97)
97.
If x and y are positive integers such that (3x + 7y) is a multiple of 11, then which of the following will be divisible by 11 ?
Answer: Option
Explanation:
By hit and trial, we put x = 5 and y = 1 so that (3x + 7y) = (3 x 5 + 7 x 1) = 22, which is divisible by 11.
(4x + 6y) = ( 4 x 5 + 6 x 1) = 26, which is not divisible by 11;
(x + y + 4 ) = (5 + 1 + 4) = 10, which is not divisible by 11;
(9x + 4y) = (9 x 5 + 4 x 1) = 49, which is not divisible by 11;
(4x - 9y) = (4 x 5 - 9 x 1) = 11, which is divisible by 11.
Discussion:
23 comments Page 2 of 3.
Vishwas said:
2 years ago
x = 4 and y = 3.
and x+y+4 = 4+3+4 = 11(which is divisible by 11 )
Hence, I think option B is also correct.
and x+y+4 = 4+3+4 = 11(which is divisible by 11 )
Hence, I think option B is also correct.
(7)
Siddhartha Chakraborty said:
2 years ago
x = 4 and y = 3.
Then x+y+4 = 4+3+4 = 11(which is divisible by 11 )
Hence, I think option B is also correct.
Then x+y+4 = 4+3+4 = 11(which is divisible by 11 )
Hence, I think option B is also correct.
(19)
Abdulla said:
1 decade ago
Lets x=4 y=3 then 3x+7y= 33 which is multiple of 11 as well. In this case the ans should be b.
Pratul said:
1 decade ago
If x=4 and y=3 then also condition is satisfied and answer is B.
Prakash said:
5 years ago
As x=4 and y=3 is required.
So, x + y + 4 is correct answer.
So, x + y + 4 is correct answer.
Prakash said:
5 years ago
As x=4 and y=3 is required. So, x+y+4 is the correct answer.
Madhu said:
1 decade ago
Good Question Puneet, Can any body say answer for this?
Priya said:
1 year ago
Why do we put x=5, y=1?
Anyone, please explain me.
Anyone, please explain me.
(4)
Kapil said:
1 decade ago
True B option is also right if we put x=4 and y=3.
Techno said:
8 years ago
What a joke, keep hitting during the exams.
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