Question

the sum of the digit of a two digit number is 9 also nine times this number is it with the number obtained by reversing the order of the digits find the number​

Answer 1

Let tens digit no.be X and unit digit no.be Y

A/q

x+y=9

and 9 (10×x+y)=2 (10×y+x)

90x+9y=20y+2x

88x-11y=0

from 1st

11x+11y=99

88x-11y=0

......

99x=99

x=1