Question 1205229
<pre>

There are 8+9+6=23 marbles in all.

8 of them are red and 23-8=15 of them are non-red.</pre>What is the probability that all the marbles are red?<pre>
{{{

matrix(1,8,There,are,8,red, "marbles,", Choose,any, 5) / matrix(1,10, There,are, 23, marbles,of,any,"color,", Choose, any,5)}}}</pre>What is the probability that exactly two of the marbles are red?<pre>
{{{

(matrix(1,8,There,are,8, red, "marbles,", Choose,any, 2))*(matrix(1,8,There,are,15, "non-red", "marbles,", Choose,any, 3)) / matrix(1,10,  There,are,23, 
marbles,of,any,"color,", Choose, any,5)}}}

What is the probability that none of the marbles are red?

{{{

matrix(1,8,There,are,15, "non-red", "marbles,", Choose,any, 5) / matrix(1,10,  There,are,23, 
marbles,of,any,"color,", Choose, any,5)}}}

Edwin</pre>