Step 1: Understanding the Total Cards and Queen Cards.
A standard deck of cards consists of 52 cards. There are 4 queens in the deck, one from each suit (hearts, diamonds, clubs, and spades).
Step 2: Probability Formula.
The probability \( P \) of an event is given by the formula: \[ P = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} \] In this case, the number of favorable outcomes is the number of queen cards, which is 4, and the total number of outcomes is the total number of cards, which is 52.
Step 3: Substituting Values.
The probability of drawing a queen card is: \[ P(\text{Queen}) = \frac{4}{52} \] Simplifying: \[ P(\text{Queen}) = \frac{1}{13} \]
Step 4: Conclusion.
Thus, the probability of drawing a queen card from a deck of 52 cards is \( \frac{1}{13} \).
If the probability distribution is given by:
| X | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|---|
| P(x) | 0 | k | 2k | 2k | 3k | k² | 2k² | 7k² + k |
Then find: \( P(3 < x \leq 6) \)
If \(S=\{1,2,....,50\}\), two numbers \(\alpha\) and \(\beta\) are selected at random find the probability that product is divisible by 3 :