Question

the digits in one's and tens places of a two digit number are X and Y then find the number​

Answer 1

Answer:

Suppose our number is 53.It has 3 at units digit and 5 as tens digit

So 53 can be written as 10×5+3

Similarlly any 2 digit number say 'yx' with x at units digit and y as tens digit which can be written as 10x+y

Another approach is say our number is yx then by dividing it with 10 we get remainder x and quotient as y

So we know that dividend=divisor×quotient+remainder

So xy=10×y+x