Question
A number consists of two digits. If the number formed by interchanging the digits is added to the original number, the resulting number (i.e. the sum) must be divisible by
Answer: Option B
Answer: (b)Let the number be 10x + y After interchanging the digits, the number obtained = 10y + x According to the question, Resulting number = 10x + y + 10y + x = 11x + 11y = 11 (x + y) which is exactly divisible by 11.
Was this answer helpful ?
Answer: (b)Let the number be 10x + y After interchanging the digits, the number obtained = 10y + x According to the question, Resulting number = 10x + y + 10y + x = 11x + 11y = 11 (x + y) which is exactly divisible by 11.
Was this answer helpful ?
More Questions on This Topic :
Latest Videos
Latest Test Papers
Submit Solution