A number of two digits has 5 for its units digit and the sum of digits is 1/9 of the number itself. What is the number.
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Since the sum of the digits (of the two digit number) is 1/9 of the number itself see the multiplication table of 9. 1×9=9; 2×9= 18; 3x9=27 ; 4×9=36; 5×9=45; 6×9=54; and so on . Since the unit digit is 5 the answer is 45.20-Jul-2020
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