Question

find the number whose sum of digits is 6 and if we add 18 to it the digit will become reverse

Answer 1

let no be XY

.X + Y = 6

10 x + y + 18= 10Y + x

9x +18 -9y =0

x + 2 -y=0

x- y = -2

x+ y= 6 and add

2x = 4

x= 2

y = 4

so number is 24