find the number of ways of forming an executive committee of four in a social committee consisting of 15 members if a particular man must be in the committee.

Ithink that b is correct but just in case wait to see if someone else answers

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask

Some of her  assignments would be creation of drugs. she is a medical chemist after all so she'd need to have the necessary knowledge to make medicine which can later be sold in a pharmacy