X is a two-digit number. Y is the number obtained on reversing the digits of X Which of the following is true? (1) X + Y is divisible by 10. (2) X-Y is divisible by 6. (3) X-Y is divisible by 9 (4) X+Y is divisible by 8
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Given: X is two digit number
Let X=10a+b
Y is number obtained by reversing digits of X
∴Y=10b+a
X+Y=11(a+b) → divisible by 11
X−Y=9(a−b) → divisible by 9
Step-by-step explanation:
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