Skip to content

Course home

4.1 Probability (A-level only)

4.1 Probability (A-level only)

EasyMediumHard
12345678
Question 3

In a survey of 80 developers, 50 use Python, 32 use Java and 20 use both languages. One developer is selected at random.

a.

Determine whether using Python and using Java are independent events.

[2]
b.

Find the probability that the developer uses at least one of the two languages.

[2]
Markscheme

4.1 Probability (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.1 Probability (A-level only)

164 exam-style questions on WJEC A Level Maths 4.1 Probability (A-level only), covering 4.1.1 Probability (A-level only), 4.1.2 Probability (A-level only), and 4.1.3 Probability (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

Question bank