Gregg has 12 cards. Half are black, and half are red. He picks two cards out of the deck. What is the probability that both cards are red
Probability of a red card out of 12 cards = 6/12 = 1/2
Now, probability of a red card of 11 cards = 5/11
Combined probability = 1/2 * 5/11 = 5/22
In short, Your Answer would be 5/22
Hope this helps!
He has 12 cards, half are black, and half are red.
Half would be 6, so
6 red cards
6 black cards
The probability of drawing a red card, is 50%. Same goes with a black card.
There fore, if you draw 2 cards, the probability of drawing two reds would be 25%.