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anonymous

  • 5 years ago

how do you find pairs of numbers with a gcf of something? eg: "Find two pairs of numbers that have a GCF of 5."

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  1. anonymous
    • 5 years ago
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    Do you know what a GCF is?

  2. anonymous
    • 5 years ago
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    yes.

  3. anonymous
    • 5 years ago
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    Well, there are lots of numbers that this will work for. If you take 5 and any multiple of 5 it will work.

  4. anonymous
    • 5 years ago
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    oh! so its just multiples?

  5. anonymous
    • 5 years ago
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    It's kind of the opposite of multiples, but in order to find the greatest common factor, you use multiples.

  6. anonymous
    • 5 years ago
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    Yeah I know that. I know how to find GCF's, but... yeah. okay, anyway, thanks.

  7. anonymous
    • 5 years ago
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    Are you sure you understand? If you have a specific question, I'll do my best to answer it.

  8. anonymous
    • 5 years ago
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    yeah, i understand.

  9. anonymous
    • 5 years ago
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    thanks, though.

  10. anonymous
    • 5 years ago
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    Multiply a bunch of primes together. Then multiply a bunch of different primes together. Then multiply each of these badass numbers by five, and BAM you have two numbers whose GCF is 5. Make sure your primes are different though! With the exception that each is allowed to have a two, a three, or two twos.

  11. anonymous
    • 5 years ago
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    Just kidding on that last part.

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