a question based on linear equation in one variable.
Asked by slesha | 22nd Dec, 2009, 10:34: PM
Let x, y be the ten's and unit's digit respectively and the number is 10x+y.
x = y + 2 ......(1)
10x + y - 18 = 10y + x
i.e. x - y = 2
x = y + 2 .......(2)
Since (1) and (2) are same, there are many such numbers.
For example, y = 1
x = 3
The number is 31.
Similarly another number is 42 and so on.
Answered by | 22nd Dec, 2009, 10:50: PM
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