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There are two black 7's and two red queen's in a standard deck of playing cards. The probability of drawing a black 7 is 2 in 52, or 1 in 26, or about 0.038. The probability of drawing a red queen from the remaining 51 cards is 2 in 51, or about 0.039.

The probability, then, or drawing a black 7 followed by a red queen is (2 in 52) times (2 in 51), which is 4 in 2652, or 2 in 1326, or about 0.00151.

Q: What is the probability of drawing a black 7 followed by a red queen from a pack of playing cards?

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The probability of drawing a red or black card from a standard deck of playing cards is 1 (a certainty). This is because these are the only options available.

The probability is one half.

0.5

The probability of drawing one black seven from a standard deck of cards is 2/52 = 1/26. The probability of drawing the other black seven from the remaining 51 cards is 1/51. Therefore the probability of drawing both black sevens from a deck of cards = 1/26 x 1/51 = 1/1326 ~ 0.000754 (3sf).

26/52

Related questions

The probability of drawing a red or black card from a standard deck of playing cards is 1 (a certainty). This is because these are the only options available.

1/26

2/52 or 1/26

Probability of not drawing a black six from a deck of cards = 1 - probability of drawing a black 6 = 1 - 2/52 = 50/52 = 25/26.

The probability is one half.

0.5

The probability of drawing a black 8 from a standard deck of 52 card is 2 in 52 or 1 in 26 or about 0.03846.

The probability of drawing one black seven from a standard deck of cards is 2/52 = 1/26. The probability of drawing the other black seven from the remaining 51 cards is 1/51. Therefore the probability of drawing both black sevens from a deck of cards = 1/26 x 1/51 = 1/1326 ~ 0.000754 (3sf).

26/52

it is a 1/4

1/26

Excluding jokers, the probability is 1 in 2.