Integer Subtraction in Terms of Counting
Read this topicProblems 5
- There is a 50%50 \%50% chance of rain on every day this week (7 days). What is the probability that it doesn't rain at all? (enter your answer as a fraction)
- How many ways get at least 2 heads and 2 tails?
- There is a 50%50 \%50% chance of rain on every day this week (7 days). What is the probability that it rains at least once? (Enter your answer as a fraction)
- How many ways can you get 0 heads or 0 tails?
- How many ways can you flip exactly 1 head?