<PRE><B>Question 2360</B>
55 cards? A deck of cards have 52 (+ 2 jokers).

Using a standard deck...

1. P(a certain card) = 1/52

2. P(3 certain cards, ABC) = P(1st is one of the 3) + P(2nd is one of the other 2) + P(3rd is the last one) 
P(ABC) = 3/52 * 2/51 * 1/50 = 1/22100

3. P(not drawing card A in 14 attempts) = longwinded way, so you can see...
51/52 * 50/51 * 49/50 * 48/49 * ... * 38/39.

cancel out all the duplicate numbers to leave 38/52 = 0.731 to 3dp.


jon.</PRE>