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 \( \frac{1}{13} \).
Three distinct numbers are selected randomly from the set \( \{1, 2, 3, \dots, 40\} \). If the probability, that the selected numbers are in an increasing G.P. is \( \frac{m}{n} \), where \( \gcd(m, n) = 1 \), then \( m + n \) is equal to:
A board has 16 squares as shown in the figure. Out of these 16 squares, two squares are chosen at random. The probability that they have no side in common is: