The Singing Hedgehog Guide to:

Probability 2 - Cards

With 4 suits each of 13 cards we generally get quarters and thirteenths.

Here are some probabilities relating to cards:

These all change of course if a card is not replaced.

Chances are then out of 51; useful to remember that 51 is 3 x 17 so some cancelling may be possible

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Probability 2 - Cards

With 4 suits each of 13 cards we generally get quarters and thirteenths.

Here are some probabilities relating to cards:

Chance of getting a red card | 26/52 = 1/2 |

Chance of getting a spade | 13/52 = 1/4 |

Chance of getting a picture card (J,Q,K,A) | 12/52 = 4/13 |

Chance of getting a four | 4/52 = 1/13 |

Chance of getting a red 7 | 2/52 = 1/26 |

Chance of getting a 5 of clubs | 1/52 |

These all change of course if a card is not replaced.

Chances are then out of 51; useful to remember that 51 is 3 x 17 so some cancelling may be possible

return to SHG main page