Arnold F. answered • 10/03/15
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If that's the whole question it is inexactly worded.
If all the yellow blocks are indistinguishable from each other the answer is 1. otherwise it's a simple combination question of choosing 3 from 6. C(6,3)=20.
Arnold F.
Do you know what was the correct answer for the first question?
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10/03/15
Jenna C.
Yes it was 20! Thanks so much! :)
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10/03/15
Arnold F.
1. There are C(4,2) ways of choosing the black and C(2,1) for the red. These two then must be multiplied.
2. This one is C(4,1) x C(6,2)
If you have problems with alot of these questions you should consider using one of the tutors for more comprehensive
help. I'm just one of many who can do online tutoring.
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10/03/15
Jenna C.
Thank you so much for the help! I think I understand a lot better now. If I continue to help problems with this type of problem I will for sure get help. :)
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10/03/15
Arnold F.
You're welcome, and if you do decide to look for a tutor in the future and I am in the running, my online tutoring rate is lower than my posted rate.
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10/03/15
Jenna C.
10/03/15