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Question
A two digit number is 27 more than its reversed number. What is the difference between its digits?
A two digit number is 27 more than its reversed number. What is the difference between its digits?
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Solution
The correct option is B 3
ab - ba = 27
(10a + b) - (10b + a) = 27
9a - 9b = 27
a - b = 3
3
ab - ba = 27
(10a + b) - (10b + a) = 27
9a - 9b = 27
a - b = 3
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