Some questions to delve a little deeper into the understanding of probability and tree diagrams. The first two are fairly standard (I)GCSE fare but subsequent questions become more complex with questions 5 and 6 requiring the solution of quadratic equations if an algebraic approach is used. Suitable for KS4 students who are ready for something a little more challenging than the standard GCSE style question. Answers included.


  • Probability-and-Tree-Diagrams-Challenging-Questions.docx
  • Probability-and-Tree-Diagrams-Challenging-Questions.pdf

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6 Reviews

  • 5
    user avatarmumfitza month agoreport

    Thank you for this variety of questions for tree diagrams.

  • 5Recommended
    user avatarcolm14058 months agoreport

    A selection of excellent challenge and extension questions for tree diagrams. The last few even venture into the realm of quadratic equations, meaning your students should be prepared for anything the exam should dare to throw at them.

  • 4
    user avatarColeyAL10 months agoreport

    Is there a mistake on Q5? Should it be 21/45?

    • user avatartonycarter45Reply from Author10 months ago

      I've checked and there's no mistake - it would be 21/45 if the ball was not replaced but in this question the first ball is replaced before the second is removed.

  • 4
    user avatarDaveGalea year agoreport

    Nice resource. Very straight forward in approach with some suitable challenge for top end year 11 students.

  • 5
    user avatarhboz2062 years agoreport

    Thank you for sharing, great resource