Question

plz help. You want to form a new club at school. You have 50 guys and 30 girls that are interested in
joining. You decide to designate a group of 3 students, consisting of 2 guys and 1 girl to be
leaders within the club.
a. Use combinations to write the formula for obtaining such a group.
b. Use your formula to actually find the probability of obtaining such a group

Answer 1

The formula is n!/r!(n-r)!

Answer 2

anyone

Answer 3

you don't need all that mess
you have 30 choices for the one girl

Answer 4

ok

Answer 5

and
\[\binom{50}{2}=25\times 49\] choices for the two out of 50 guys
multiply those two numbers

Answer 6

where did you get 49