# Math Help - Choosing from 12 people.

1. ## Choosing from 12 people.

not done any probability in years, please can some1 help.

there are 12 people, i am one of those people. one person is picked at a time (not replaced). What is the actually probability of me being picked? is it 1/6?

i seem to get confused with the initial probability of me being picked as 1/12 and then the probability increases to 1/11 on the second pick.

2. $\frac{1}{6}$ is the correct answer if only two people are selected.

But you failed to give us that piece of information.
How many are selected?

3. thanks for your help!

only two people are picked.

so the fact that the probability changes from 1/12 to 1/11 after the first pick (if not selected) makes no difference to the actual probability??????. 1/6 (2/12) just doesn't seem logical to me...... baring in mind there is 2 sets of possibilities. oh well what do I know, your the experts !!

4. Originally Posted by zlatan
thanks for your help! only two people are picked.
so the fact that the probability changes from 1/12 to 1/11 after the first pick (if not selected) makes no difference to the actual probability??????. 1/6 (2/12) just doesn't seem logical to me...... baring in mind there is 2 sets of possibilities. oh well what do I know, your the experts !!
$\displaystyle \frac{11}{\binom{12}{2}}=?$