If x and y are two digits of the number 653xy such that the number is divisible by 80, then x + y is equal to :
A. 3
B. 4
C. 5
D. 6
Answer: Option D
Solution(By Examveda Team)
Since, 653xy is divisible by 80, we must have y = 0Now, 653x0 must be divisible by both 5 and 16
Clearly, it is divisible by 5 for all values of x
Now, the number 53x0 must be divisible by 16
The least value of x is clearly 6
So, x + y
= 6 + 0
= 6
Related Questions on Number System
Three numbers are in ratio 1 : 2 : 3 and HCF is 12. The numbers are:
A. 12, 24, 36
B. 11, 22, 33
C. 12, 24, 32
D. 5, 10, 15
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