Question

Murali added a two digit number to the

number formed by reversing the digit of this two

digit number. This sum is always divisible by

(a) 9 (b) 11

(c) 10 (d) cannot be determined​

Answer 1

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• Suppose ten's digit is x and unit's digit is y
• Number is 10x+y
• After reversing no. is 10y+x
• According to Question
• 10x+10y+x+y
• = 11(x+y)
• So the number is always divisible by (b) 11

Answer 2

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