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The sum of the digits of a two digit number is 14. If 18 is subtracted from the number, digits are reversed. Find the number(1) 86 (2) 77 (3) 68 (4) 76 |
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Answer» Correct option: (1) 86 Explanation: N = 10x + y N’ = 10y + x x + y = 14 _____ (1) N – 18 = N’ (10x + y) – 18 = 10y + x 9(x – y) = 18 x – y = 2 _____(2) from (1) & (2) we get x = 8 & y = 6 N = 86 |
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