SOLUTION: Hi guys! Last question, please answer this. I am studying and I am not stupid nor lazy. hehe. But it is kinda hard. So, here is the question: A box contains 5 RED, 3 BLUE, 4 GRE

Question 424505: Hi guys! Last question, please answer this. I am studying and I am not stupid nor lazy. hehe. But it is kinda hard. So, here is the question:
A box contains 5 RED, 3 BLUE, 4 GREEN, and 2 YELLOW balls. In how many ways can 4 ball be drawn such that...
a. they are all RED.
b. 2 RED and 2 GREEN.
c.1 RED, 1 BLUE and 2 YELLOW
d. 4 GREEN
God Bless to all tutors here, someday I will register here as a tutor when summer starts.
Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!

a) no. of ways = 5C4 = 5

b) no. of ways = 5C2 * 4C2 = 10 * 6 = 60

c) no. of ways = 5C1 * 3C1 * 2C2 = 5 * 3 * 1 = 15

d) no. of ways = 4C4 = 1

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