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A number consists of two digits. If the digits interchange place and the new number is added to the original number, then the resulting number will be divisible by :
Answer & Solution
Correct Answer:
Option
D
Let the ten's digit be x and unit's digit be y
Then, number = 10x + y
Number obtained by interchanging the digits = 10y + x
∴ (10x + y) + (10y + x)
= 11(x + y), which is divisible by 11
Then, number = 10x + y
Number obtained by interchanging the digits = 10y + x
∴ (10x + y) + (10y + x)
= 11(x + y), which is divisible by 11
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