6 if the product of the two digits is 14
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Answered by
2
Answer:
B
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
Answered by
1
Answer:
Step-by-step explanation:
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