Question

Q1- 52 Cards Deck ,
A- How many 2 cards poker handle are possible?

Q2- Fourteen horses in a race , in how many different way can first 5 finish?

Answer 1

can I answer Q2 instead (sorry, not really good at cards ^^;;)

use combination:

14C5

= 14!/([14-5]!5!)

= (8.718x10^10)/ [(362880)(120)]

=(8.718x10^10)/43545600

=2002
(not sure if i'm right though ^^;;)

Answer 2

I solve it .

For A- Use combination( Order is not important) = 52 C 2 = 1326

For B . this type of question the order is important . So use Permutation not combination formula
14 P 5 = 14!/(14-5)! = 240240.