# A two digit number is such that the product of its digit is 18.when 63 is subtracted from the number , the digit interchange their place.find the number

2
by vishalsinha

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by vishalsinha

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The product of 92 is 9*2 =18

When we subtract 63 to this number it becomes 29.

sorry for the mistake

The Brainliest Answer!

xy=18

10x+y-63=10y+x

9x-9y=63

x-y=7...(1)

x+y=((x-y)^2+4xy)^0.5=11...(2)

from (1) and (2)

x=9 and y= 2

so the number is 92

checK:

92-63=29

9*2=18

note example:

47=40+7=4(10)+7

here 4-tens digit

7-one's digit