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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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