Tom, Susie, Marilyn, Joe, Erica, Tori, Meredith and Derek are taking water skiing lessons. In how many ways could they line up if:
a.) there are no special conditions (i.e., anyone can be anywhere in the line)?
b.) Tom, Joe, and Derek line up first, but in any order?
c.) Erica wants to go right before Derek?
d.) Joe and Marilyn want to be beside each other but don't care which order?
e.) Tori does not want to go first and Joe does not want to go last?
f.) Tom and Susie do NOT want to be beside each other?
g.) the whole group is standing in a circle rather than a line?
h.) in the line, Erica, Tori and Meredith want to all be beside each other, in any order?
