Question

6 if the product of the two digits is 14​

Answer 1

Answer:

Answer:

Step-by-step explanation:

Let the no be 'xy' with x×y=14

As xy+45=yx(x,y>0)

⇒(10x+y)+45=10y+x

⇒9x−9y+45=0

⇒x−y+5=0&x×y=14

⇒x−

x

14

+5=0

⇒x−

x

14

+5=0

⇒x

2

+5x−14=0

⇒x=2,−7&y=7,−2

Ad x,y>0⇒ no is 27