Phebe
  • Phebe
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Mathematics
katieb
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StudyGurl14
  • StudyGurl14
Your first step would be to factor the number 20.
Phebe
  • Phebe
ok
StudyGurl14
  • StudyGurl14
I mean, find the factors of 20. Which numbers when multiplied together, equals 20?

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Phebe
  • Phebe
5*4
StudyGurl14
  • StudyGurl14
correct. so 4 and 5 are factors. What other number combinations equal 20 when multiplied?
Phebe
  • Phebe
10*2
Phebe
  • Phebe
^^
StudyGurl14
  • StudyGurl14
correct. so so far we have 2, 4, 5, and 10
StudyGurl14
  • StudyGurl14
One more set of numbers. Can you find them?
Phebe
  • Phebe
i dont know any others lol
StudyGurl14
  • StudyGurl14
Hint: a number is always divisible by itself and 1
Phebe
  • Phebe
is it 20*1
StudyGurl14
  • StudyGurl14
yes. So, what set contains the numbers 1, 2, 4, 5, 10, and 20?
StudyGurl14
  • StudyGurl14
only contains those numbers, with no others
Phebe
  • Phebe
umm... i dont know
Phebe
  • Phebe
is the Answer B?
StudyGurl14
  • StudyGurl14
no, not be. which set contains only the previously mentioned numbers?
Phebe
  • Phebe
A is the answer?
StudyGurl14
  • StudyGurl14
no. The answer would contain all those numbers and no other. The factrs of 20 are 1, 2, 4, 5, 10, and 20. So what set looks like this? {1, 2, 4, 5, 10, 20}
Phebe
  • Phebe
OOOO omg thank you soo much
StudyGurl14
  • StudyGurl14
You're welcome. :)

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