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OpenStudy (studygurl14):
Your first step would be to factor the number 20.
OpenStudy (phebe):
ok
OpenStudy (studygurl14):
I mean, find the factors of 20. Which numbers when multiplied together, equals 20?
OpenStudy (phebe):
5*4
OpenStudy (studygurl14):
correct. so 4 and 5 are factors. What other number combinations equal 20 when multiplied?
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OpenStudy (phebe):
10*2
OpenStudy (phebe):
^^
OpenStudy (studygurl14):
correct. so so far we have 2, 4, 5, and 10
OpenStudy (studygurl14):
One more set of numbers. Can you find them?
OpenStudy (phebe):
i dont know any others lol
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OpenStudy (studygurl14):
Hint: a number is always divisible by itself and 1
OpenStudy (phebe):
is it 20*1
OpenStudy (studygurl14):
yes. So, what set contains the numbers 1, 2, 4, 5, 10, and 20?
OpenStudy (studygurl14):
only contains those numbers, with no others
OpenStudy (phebe):
umm... i dont know
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OpenStudy (phebe):
is the Answer B?
OpenStudy (studygurl14):
no, not be. which set contains only the previously mentioned numbers?
OpenStudy (phebe):
A is the answer?
OpenStudy (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}
OpenStudy (phebe):
OOOO
omg
thank you soo much
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