Answer :

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.


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