Richard throws a dart at a target. He assumes that each throw is independent and that the probability he hits the target is 12\displaystyle \frac{1}{2}21. Richard throws 5 darts.
Calculate the probability of at least 3 of these darts hitting the target.
Richard throws 5 darts at the target each day for 3 days. Calculate the probability that at least 3 darts hit the target for exactly 1 of these days.
215 exam-style questions on Edexcel A Level Maths Statistical Distributions, covering 6.1 Probability Distributions, 6.2 The Binomial Distribution, and 6.3 Cumulative Probabilities. Each one has a worked solution and a mark scheme showing where the marks go.