Anna L.
asked • 07/22/15How many different numbers are in both sets A and B?
The whole question:
If set A is the set containing the positive integer factors of 12 and set B is the set containing the positive integer factors of 16, how many different numbers are in both sets A and B?
I thought it was 2, but the correct answer is 3. I don't know why. Please help. Thank you!
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1 Expert Answer
Inactive Tutor answered • 12/26/20
Tutor
New to Wyzant
12 has factors 1,2,3,4,6 and 12
16 has factors 1,2,4,8,16
1,2 and 4 are common to both A and B
only different factors are A has 3,6 and 12 which are not in B. That's 3 factors that are different
B has 8 and 16 which are not in A. That's 2 factors that are different.
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Stephanie M.
07/22/15