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overlapping sets

Can someone post formulas for the number of things in 3 overlapping sets:

1.total number of objects: aubuc
2.In exactly 1 set
3. in exactly 2 sets
4.in atleast 1 set
5.in atleast 3 sets

Help much appreciated

by gmatstud25

Sat Sep 27, 2008 1:35 pm
Forum: Problem Solving
Topic: overlapping sets
Replies: 1
Views: 1267

Probability PS

The question is "what is the probability of getting tails on the 4th attempt and not getting exactly 4 tails in 6 attempts"

by gmatstud25

Sat Sep 27, 2008 1:31 pm
Forum: Problem Solving
Topic: Probability PS
Replies: 9
Views: 1862

Probability PS

what is the probability that a coin lands tail on exactly the 4 attempt in a total of 6 attempts?

by gmatstud25

Sat Sep 27, 2008 10:00 am
Forum: Problem Solving
Topic: Probability PS
Replies: 9
Views: 1862