Is the number x is divisible by 9.
1. The number x can be obtained by taking the difference between a number and
another one obtained by reversing the digits.
2. The sum of the digits of x is divisible by 9.
It should be D
1) ab is the number and ba is reverse number
10a+b -( 10b+a)= 9(a-b) clearly divisble by 9
2) say abc is the number
given a+b+c =9k
100a+10b+c = 99a+9b+(a+b+c) = 99a+9b+9k -->clearly divisible by 9
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