One Billion as Product of Two Numbers with No Zeros
Date: 12/12/2001 at 20:00:46 From: Danny Rubin Subject: Math and multiples The problem is: Write 1,000,000,000 as the product of two numbers, neither of which contains any zeros. I cannot figure out the answer. I don't know where to start. This problem is totally confusing me. Help! Thank you.
Date: 12/12/2001 at 22:43:59 From: Doctor Peterson Subject: Re: Math and multiples Hi, Danny. Start by factoring the number as a product of primes. It will have only 5's and 2's. If you multiply 2 and 5, you get a number containing zero (a multiple of ten). So how can you split up the prime factors to express 1,000,000,000 as a product of two numbers that are not multiples of ten? - Doctor Peterson, The Math Forum http://mathforum.org/dr.math/
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