Gloria had 2 sets of alphabet cards (A-Z). She mixed the two sets together to form a single stack of cards. Then Gloria drew three cards from the stack without replacing them. What is the probability that she drew either a card with an L or a card with an R all three times?

Question

kropot72 · Answer

In the mixed stack, how many cards are there with an L or an R? When you have that number, divide it by the total number of cards in the mixed stack to find the probability of drawing an L or an R the first time. Can you do that and post your result? Then we can do the next steps in the solution.

queelius · Answer

Two questions.

(1) Is there just one of each letter in each set, e.g., 1 A, 1 B, ... 1 Z?
(2) By "drew either a card with an L or a card with an R all three times", do you mean the three drawn cards can be any combination of R and L, e.g., "LLL", "LRL", ...?