An organization with 2n people consists of n married couples. a committee of size k is selected, with all possibilities equally likely. find the probability that there are exactly j married couples within the committee.

5/6+7/8what is the answer sealsdbdbshd

The radius of a sphere is 3 inches. which represents the volume of the sphere?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *