document.write( "Question 1101535: Using only the number 87 how many times will you use it as a factor to get a product whose ones digit is 7? \n" ); document.write( "

Algebra.Com's Answer #716167 by Alan3354(69443) $\"\"$ $\"About$

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Using only the number 87 how many times will you use it as a factor to get a product whose ones digit is 7?
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\n" ); document.write( "87^(4n+1), integer n >= 0
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