Water Ski Queenstown
Probability Help again Plz?
A tour group consists of 16 senior citizens, 20 adults and 6 children.
a) There is an opportunity for 3 of the children to try water-skiing. In how many ways can they be selected?
b) A delegation of 2 senior citizens and 3 adults is to meet the Mayor of Queenstown. In how many ways can this group be chosen?
a) 6 C 3 = 6! / (3! * 3!) = 20
b) (16 C 2) * (20 C 3) = (16! / (14! * 2!)) * (20! / (17! * 3!)) = 136800
Water Skiing Bobs Cove Queenstown
Themocracy