Find Out the Two Digit Number
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. Find the number?
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X × Y = 8
XY + 18 = YX
10X + Y + 18 = 10Y + X
X — Y = — 2
X + Y = 6
X = 2
Y = 4
Hence the number is 24
XY + 18 = YX
10X + Y + 18 = 10Y + X
X — Y = — 2
X + Y = 6
X = 2
Y = 4
Hence the number is 24
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