The question is..

A, B and C are events of a sample space headphones(cant find symbol).Obtain expressions for each of the following events:

a. exactly one occurs;

b. exactly two occur;

c. at most two occur

d. both B and C occur but not A

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- Feb 10th 2013, 12:56 PMMathJackPlease need help with probability question before exam tmw
The question is..

A, B and C are events of a sample space headphones(cant find symbol).**Obtain expressions for each of the following events**:

a. exactly one occurs;

b. exactly two occur;

c. at most two occur

d. both B and C occur but not A - Feb 10th 2013, 01:06 PMPlatoRe: Please need help with probability question before exam tmw
I will do one of these. BUT you must respond with attempts on the other three.

a) $\displaystyle (A\cap\overline{B}\cap\overline{C})\cup(\overline{ A}\cap B\cap\overline{C})\cup(\overline{A}\cap\overline{B }\cap C)$

Where $\displaystyle \overline{D}$ is the complement of $\displaystyle D$ - Feb 10th 2013, 02:03 PMMathJackRe: Please need help with probability question before exam tmw
Thanks Plato, Please let me know if these are correct. Also it looks like its asking for a probabilistic expression, am I wrong?

b. (AnBnC') U (AnB'nC) U (A'nBnC')

c.Is this a union of part a. and b. ?

d. (BnCnA')

Thanks please let me know if these are correct - Feb 10th 2013, 03:19 PMPlatoRe: Please need help with probability question before exam tmw