Question 1190135
6 out of 30 is 30C6 possibilities
for pink NOT to be chosen at all, the probability is 25C6*5C0/30C6=0.2983, so the answer is the complement or 0.7017.
Also can be done by brute force with probability not is 25/30*24/29*23/28*22/27*21/26*20/25, which also equals 0.2983 with complement 0.7017, which is the answer.
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E(x)=nK/N=6*5/30; the number of "good," if you will (5)*number of trials divided by total number.
=30/30, or 1
Brute force:
probability of 0 being chosen is 0.2983
probability of 1 is 5C1*25C5/30C6=0.4474
probability of 2 is 5C2*25C4/30C6=0.2130
of 3 is 0.0387
of 4 is 0.0025
of 5 is <0.0001
and x*p(x) summed will be 1.0 allowing rounding.