Question

A standard pack of cards is thrown into the air in such a way that each card, independently, is equally likely to land face up or face down. The total value of the cards which landed face up is then calculated. (Card values are assigned as follows: Ace=1, 2=2, ... , 10=10, Jack=11, Queen=12, King=13. There are no jokers.)

What is the probability that the total value is divisible by 13?

Answer 1

this seems quite complex

Answer 2

Hint :Determine the probability that, when the professor tries to take an (n+1)st match from one box, exactly n−k matches have been taken from the other box.

Answer 3

wrong question :p

Answer 4

i dont want hints yet though

Answer 5

ah this is tough, ill have to come back to it