which of the following is the probability of drawing a red card or a 7 from aa standard deck of cards
To calculate the probability of drawing a red card or a 7 from a standard deck of cards, we first need to determine the total number of red cards and the total number of 7s in the deck.
There are 26 red cards in a standard deck (13 hearts and 13 diamonds) and there are 4 7s (one in each suit).
Total number of red cards and 7s = 26 (red cards) + 4 (7s) - 2 (since one card, the 7 of diamonds, is both red and a 7) = 28
Total number of cards in a standard deck = 52
Therefore, the probability of drawing a red card or a 7 from a standard deck of cards is:
Probability = number of favorable outcomes / total number of outcomes
Probability = 28 / 52
Probability ≈ 0.5385 or 53.85%
Therefore, the probability of drawing a red card or a 7 from a standard deck of cards is approximately 53.85%.