What is the probability that a 13-card bridge hand contains
a) All 13 hearts?
b) 13 cards of the same suit?
c) Seven spades and six clubs?
d) Seven cards of one suit and six cards of a second suit?
e) Four diamonds, six hearts, two spades, and one club?
f) Four cards of one suit, six cards of a second suit, two cards of a third suit, and one card of the fourth suit?