The probability of Harry being late for school is 0.2. Over a term of 20 days find the probability that Harry is late:
Less than three times
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.