If X and Y are the two digits of the number 347XY such that the number is completely divisible by 80, then what is the value of X + Y?
A. 2
B. 4
C. 6
D. 8
Answer: Option A
Solution(By Examveda Team)
Given: 347XY where X, Y two digit number is completely divisible by 80.$$\eqalign{ & \frac{{347XY}}{{80}} = \frac{{347XY}}{{8 \times 10}} \cr & \frac{{7 + X + Y}}{8} \cr} $$
∴ Y must be zero
So, go through option A
Put X = 2, then number 3472 is divisible by 8.
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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