Probability Toolkit

Probability Toolkit Quiz

Spec 6.3 · Edexcel IGCSE Maths: Quiz

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5 questions, one answer each

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  1. 1. A probability scale runs from 0 to 1. Which value represents an event that is certain to happen?

    • A. 0
    • B. 0.5
    • C. 1
    • D. It cannot be shown on the scale

  2. 2. A fair spinner has 5 equal sections numbered 1 to 5. What is P(spinning a number greater than 3)P(\text{spinning a number greater than 3})?

    • A. 15\frac{1}{5}
    • B. 25\frac{2}{5}
    • C. 35\frac{3}{5}
    • D. 45\frac{4}{5}

  3. 3. A coin is flipped 150 times and lands on heads 84 times. What is the relative frequency of heads?

    • A. 0.44
    • B. 0.5
    • C. 0.56
    • D. 0.84

  4. 4. In a bag of counters, P(red)=0.25P(\text{red}) = 0.25, P(blue)=0.4P(\text{blue}) = 0.4, and the only other colour is green. If the colours are mutually exclusive and exhaustive, what is P(green)P(\text{green})?

    • A. 0.25
    • B. 0.35
    • C. 0.65
    • D. 0.75

  5. 5. A three-digit code is formed by choosing one digit from {1, 2} for the first position, one letter from {A, B, C} for the second position, and one digit from {5, 6, 7, 8} for the third position, with no repeats allowed across positions overall. Using the product rule, how many different codes are possible?

    • A. 9
    • B. 18
    • C. 24
    • D. 48

Quiz