1) How many ways can a president , a vice -president and a secretary be chosen from 12 members of a club assuming that one person cannot hold more than one position ?2) Suppose that 40 batteries are shipped to an auto parts store, and that 5 of those are defective . A fleet manager then buys 7 of the batteries from the store. In how many ways can at least 4 defective batteries be included in the purchase ?