Select all of the following problem situations that involve permutations. how many ways can you arrange 4 of the letters of the word solve if no letter can be used more than once? there are 75 different varieties of cereal at the store. how many ways can you choose 3 different varieties? there are 9 books on your summer reading list. how many ways can you choose 3 to read? there are 8 schools competing in the final round of the national swim relay. how many ways can the gold, silver, and bronze medals be awarded? how many 4-digit access codes are possible using the numbers 1 through 6 if each number can only be used once?

What point is the projection of q on a) r b) s c) t

Anyone know these questions? i need ,.

Exercise: counting committees 0.0/2.0 puntos (calificable) we start with a pool of n people. a chaired committee consists of k≥1 members, out of whom one member is designated as the chairperson. the expression k(nk) can be interpreted as the number of possible chaired committees with k members. this is because we have (nk) choices for the k members, and once the members are chosen, there are then k choices for the chairperson. thus, c=∑k=1nk(nk) is the total number of possible chaired committees of any size. find the value of c (as a function of n ) by thinking about a different way of forming a chaired committee: first choose the chairperson, then choose the other members of the committee. the answer is of the form c=(α+nβ)2γn+δ. what are the values of α , β , γ , and δ ?