here are five seniors in a class, for each situation, write how the binomial formula is used to calculate the probability.

a) In how many ways can you choose one senior to represent the group?

b) In how many ways can you choose two seniors to represent the group?

c.) In how many ways can you choose three seniors to represents the group?

d) In how many ways can you choose four seniors to represents the group?

e).) In how many ways can you choose five seniors to represents the group?