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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