The average between a two digit number and the number obtained by interchanging the digits is 9. What is the difference between the two digits of the number? (a) 8 (b) 2 (c) 5 (d) Cannot be determined (e) None of these

3 Answers on this Question

1. ( d ) Cannot be determined

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2. Bcoz the average of the two numbers is 9,their sum should be
   18..
   The sum of 2 two digit numbers cannot be 18..so,answer is
   d)Cannot be determined

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3. ( d ) Cannot be determined

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