If the two digit integers M and N are positive and have the same digits, but in reverse order, which of the following CANNOT be the sum of M and N?
Created: 8 months ago | Updated: 2 months ago
Job Solution Mutual Trust Bank Ltd Mutual Trust Bank ltd - Probationary Officer - 2012 গণিত
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Let the first digit be xy, then the second digit would be yx.

xy = 10x + y
yx = 10y + x

sum = 11 (x+y)

so the sum has to be multiple of 11. 181 is not. so 181 be the answer

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