Six-a-Day
Six focused multiple-choice questions for recall, fluency and confidence. Each question has close distractors and one answer that is clearly further away.
Practice setup
Current set: GCSE Mixed - Probability
Generate a set
Choose the level and stream, then select one answer for each question.
Probability rules
P(𝑤𝑖𝑛) = 310. Find P(not 𝑤𝑖𝑛)
Tree diagrams
A tree diagram has P(red) = 12 then P(blue after red) = 35. Find P(red then blue) if possible from this branch
Venn diagrams and sets
In a group of 30, 12 are in A, 8 are in B and 4 are in both. Find 𝑛(A union B)
Sample spaces and systematic listing
A code has 4 choices for the first digit and 5 choices for the second digit. How many codes are possible?
Relative and expected frequency
The probability of success is 0.2. Find the expected number of successes in 150 trials
Independent events
A and B are independent. P(A) = 0.4 and P(B) = 0.5. Find P(A and B)