SOLUTION: a class of 31 students, a committee of 2 is chosen to organize a party What is the probability that sue and jane are both on the committee? i am sooo confused i figured out th

Question 1177376: a class of 31 students, a committee of 2 is chosen to organize a party What is the probability that sue and jane are both on the committee?

i am sooo confused i figured out that 31C2 = 465 possible combinations of pairs

P(x)=31C2Pxqn-x and i am confused
Answer by ikleyn(52788) (Show Source): You can put this solution on YOUR website!
.


The number of all possible pairs is   =  = 31*15 = 465.


Of them, ONLY one pair satisfies the problem's requirement.


So, the probability to get this happy final choice is  P = .    ANSWER

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The problem is solved.

It looks like you were on a right track.

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See introductory lessons on Probability

    - Simple and simplest probability problems
    - Solving probability problems using complementary probability
    - Elementary Probability problems related to combinations
    - A True/False test
    - A multiple choice answers test
    - Typical probability problems from the archive
    - Experimental probability problems
in this site.

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