1) Three women and seven men must form a queue. Find:

a) The number of different queues possible. (My answer: 10!)

b) The number of queues in which the women are all gattered in a single block. (My answer: 48 x 7! or 241,920)

c) The number of queues in which two women never stay together.

d) The number of queues in which each man can only stay beside, at maximum, one woman.

If you would explain too, I really need to learn this!