Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
10. Combinatorics & Probability
Probability
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
If a single card is randomly selected from a deck of cards, what is the probability of selecting an ace or a king?
A
0.0059
B
0.077
C
0.15
D
0.85

1
Understand that a standard deck of cards has 52 cards, consisting of 4 suits: hearts, diamonds, clubs, and spades. Each suit has 13 cards, including one ace and one king.
Identify the total number of favorable outcomes. There are 4 aces and 4 kings in the deck, so there are 4 + 4 = 8 favorable outcomes.
Determine the total number of possible outcomes, which is the total number of cards in the deck: 52.
Use the probability formula: Probability = (Number of favorable outcomes) / (Total number of possible outcomes).
Substitute the values into the formula: Probability = 8 / 52. Simplify the fraction to find the probability of selecting an ace or a king.
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