Question 1204024

{{{7}}} balls that are identical except that {{{3}}} are white and {{{4}}} are red


What is the probability that exactly {{{2}}} are white and {{{2}}} are red?

{{{(C(3,2)*C(4,2))/C(7,4)=18/35}}}


What is the probability that at least {{{2}}} of the balls are white?


{{{(C(3,2)*C(3,3))/C(7,3)=3/35}}}