Decide whether the exercise involves permutations or​ combinations, and then solve the problem.   A bag contains 5 ​black, 1 ​red, and 4 yellow jelly​ beans; you take 4 at random. How many samples are possible in which the jelly beans are the following.

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Decide whether the exercise involves permutations or​ combinations, and then solve the problem.
 
A bag contains
5
​black,
1
​red, and
4
yellow jelly​ beans; you take
4
at random. How many samples are possible in which the jelly beans are the following.
 
​(a) all​ black?
​(b) all​ red?
​(c) all​ yellow?
​(d)
3
black and
1
​red?
​(e)
3
black and
1
​yellow?
​(f)
3
yellow and
1
​black?
​(g)
3
red and
1
​yellow?
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