State whether the

false

let us assume 2-digit number be ‘yx’

‘x’ is at unit place and ‘y’ is at tenth place.

∴ according to the question

⇒ y + x = 9

∴y = 9-x

⇒ number will be (10y + x)

⇒ required number = 10(9-x) + x

⇒ required number = 90-10x + x

⇒ required number = 90-9x

⇒ Hence, it is not true.