There are 3 light switchas in a row and each switch can either be On or Off. Use information to answer parts a and b below. Part A: when considering all possible light switch settings, give the...

There are 3 light switchas in a row and each switch can either be On or Off. Use information to answer parts a and b below.

Part A: when considering all possible light switch settings, give the probability of having at least one light switch On.

Part B: when considering all possible light switch settings, and using odd notation, give the odd in favor of having exactly one light switch On