48. My house number is a three-digit number. The sum of this number and its three individual digits is 429.What is the product of the three digits which make up the house number?
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Megan, Start by observing that thenumber must be in the 410's or in the 420's. If it is in the 410's then the lastdigit, call it d, must satisfy 410 + 2d + 5 =429.
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