A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is: ?->(Show Answer!)

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A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is: ?->(Show Answer!)

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1. A two-digit number is such that the product of the digits is 8. When 18 is added to the number, then the digits are reversed. The number is:

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By: guest on 01 Jun 2017 05.48 pm

Let the ten's and unit digit be x and 8 respectively. x Then, 10x + 8 + 18 = 10 x 8 + x x x 10x2 + 8 + 18x = 80 + x2 9x2 + 18x - 72 = 0 x2 + 2x - 8 = 0 (x + 4)(x - 2) = 0 x = 2.

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