Probability Diagrams — Venn & Tree Diagrams

Probability Diagrams — Venn & Tree Diagrams Quiz

Spec 6.3 · Edexcel IGCSE Maths: Quiz

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  1. 1. In a class of 30 students, 18 play football and 12 play basketball, with 6 playing both. How many students play neither sport?

    • A. 6
    • B. 12
    • C. 18
    • D. 24

  2. 2. Which formula correctly gives P(A∪B)P(A \cup B)?

    • A. P(A)+P(B)P(A) + P(B)
    • B. P(A)+P(B)−P(A∩B)P(A) + P(B) - P(A \cap B)
    • C. P(A)×P(B)P(A) \times P(B)
    • D. P(A)−P(B)P(A) - P(B)

  3. 3. A bag contains 4 red and 6 green balls. One ball is drawn and NOT replaced, then a second is drawn. What is P(both are red)?

    • A. 410×410\dfrac{4}{10}\times\dfrac{4}{10}
    • B. 410×39\dfrac{4}{10}\times\dfrac{3}{9}
    • C. 410×310\dfrac{4}{10}\times\dfrac{3}{10}
    • D. 410+39\dfrac{4}{10}+\dfrac{3}{9}

  4. 4. On a Venn diagram, n(ε)=50n(\varepsilon)=50, n(A)=20n(A)=20, n(B)=15n(B)=15, n(A∩B)=5n(A \cap B)=5. What is P(A∣B)P(A \mid B)?

    • A. 550\dfrac{5}{50}
    • B. 515\dfrac{5}{15}
    • C. 520\dfrac{5}{20}
    • D. 1550\dfrac{15}{50}

  5. 5. A spinner (independent events, with replacement) lands on red with probability 0.3 each spin. What is P(at least one red) in 2 spins?

    • A. 0.6
    • B. 0.51
    • C. 0.09
    • D. 0.7

Quiz