the letter a
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The answer depends on how many cards are picked, whether they are picked at random, from what sort of pack, and whether or not cards are replaced before the next one is picked. The probability that a single card, picked at random from a regular 52 card deck is red, is 0.5
4/11
3/4
The probability that a random card picked from a standard pack is a Jack is 1/13.
If the winning numbers are picked at random, the probability is 1 in 169911.