sum of the digits of a 2digit no is 11 .the given number is less than the number obtained by interchanging the digits by 9.find the number...
Ans is 56 need explanation..!!
answer fast..!!
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sum of the digits of a 2digit no is 11 .the given number is less than the number obtained by interchanging the digits by 9.find the number...
Ans is 56 need explanation..!!
answer fast..!!
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Answer and Step-by-step explanation:
x and y will be the digits
First Number: 10x + y
After Changing Digits: 10y + x
10y + x - 10x - y = 9
9y - 9x = 9
Equation 1: y - x = 1
Equation 2: y + x = 11
Equation 1 + Equation 2 = 2y = 12
x = 5
y = 6
Number: 56.