Question

A number consists of two digit number whose product is 30 if unit digit is subtracted from tense answer digit 1 is obtained find the number

Answer 1

xy=30

Y-x =1

Y =x+1

X (x+1) =30

X^2 +x - 30 =0

(X+6)(x-5)

X=5

Then y =6

Hence the no. Is 65