Question

A number consists of two digits whose sum is 5.If the number formed by reversing the digits is less than the original number

Answer 1

Answer:

Step-by-step explanation:

HI !

Let the number be 10x +y  ,

   x = ten's place  , y = one's place

x + y = 5          ---> [1]

reversed no: ,

10y + x

10x+ y + 9 = 10y+x

9x - 9y = -9

x - y = -1            ---> [2]

Adding equations 1 and 2

x + y = 5

x - y = -1

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2x = 4

x = 2

x -y = -1

2 - y = -1

2 + 1 = y

3 = y

the number is :-

10x + y  

10 x 2 + 3

 = 23

The no: is 23

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