Question:
IF TENS no of two digit is thrice of dogit at ones place if nber is changed than number we get is fibal number less 36 than real number
Answer:
Let unit digit of the number is x
Then tens digit = 3x
Now, Number = 10 * 3x + x = 30x + x = 31 x
Again, (10 * 3x + x) - (10 * x + 3x) = 36
=> 31x - 13x = 36
=> 18x = 36
=> x = 36/18
=> x = 2
So, unit digit of the number = x = 2
and tens digit = 3x = 3 * 2 = 6
So, the number = 10 * 6 + 2 = 62
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