Number of cards in a deck =52
Number of cards that are spade =13
Number of cards that are eight =4
Number of cards that are spade and eight =1
Probability that the card drawn is a spade or an eight =
13/52+4/52 -1/52
=16/52 or 4/13
The probability of drawing a spade from a standard deck of 52 cards is 13 in 52, or 1 in 4, or 0.25.
Spade: 1 in 4 Ace: 1 in 13
1/4
The answer depends on how many cards are drawn. If you draw 40 cards, the probability is 0. The probability of not drawing a spade in a random draw of one card from a standard deck is 39/52 = 3/4.
1/4
The probability of drawing a spade from a standard deck of 52 cards is 13 in 52, or 1 in 4, or 0.25.
Spade: 1 in 4 Ace: 1 in 13
The probability of NOT drawing a spade from a standard deck of cards is 75 is an example of a mistated question - a standard deck of cards is 52, not 75.
1/4
The answer depends on how many cards are drawn. If you draw 40 cards, the probability is 0. The probability of not drawing a spade in a random draw of one card from a standard deck is 39/52 = 3/4.
The probability of drawing a red card and a spade in two cards is the probability of drawing a red card multiplied by the probability of drawing a spade, multiplied by 2 (as it doesn't matter which way around they are drawn). The probability of drawing a spade is 1/13 as there are 4 spades and 52 cards. The probability of drawing a red card after this is 26/51 if the spade was black, and 25/51 if the spade was red. This averages at 51/102 Multiply these probabilities together and then multiply by two and we get 51/663 which can be simplified to 1/13
1/4
There are 13 spades in a deck of cards, so the probability of drawing a spade is 13/52 or 1/4.
1 in 4. Because there are 4 suits of cards.
25%
It is 0.25
On a random draw of a single card, the probability is 3/4.