# maths

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A Two digit number is such that the product of the digit is 18. When 63 subtracted from the number the digit interchange the place.Find the number.

• maths -

ab=18
10b+a = 10a+b-63

9a-9b = 63
a-b = 7

factors of 18 are 9,2 and they are 7 apart, so the number is 92

check:
29 = 92-63

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