Question

What is difference of two digit number and interchanging this number is 36. What is difference between the two number?

Answer 1

${\bold{\large{answer}}}$

${\bold{\large{\underline{step-by-step-explanation}}}}$

$<b> let ten digit be 'x' unit digit be 'y' then, =>(10x+y)-(10y+x)=36\: =>9x-9y = 36 =>x-y =4$