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  • Perplex
    IB Math AAHL
    /
    Counting & Binomials
    /

    Home

    Counting & Binomials

    Exam-Style Problems

    IB: 4

    5 problems

    IB: 5

    15 problems

    IB: 6

    12 problems

    IB: 7

    10 problems

    Bonus

    3 problems

    Learning Resources

    Thumbnail for Pascal's Triangle and nCr

    Pascal's Triangle and nCr

    Theoretical introduction to ​n​Cr​, or ​(nr​), and Pascal's triangle.

    0 / 3 exercises completed
    4 skills
    Thumbnail for Binomial Theorem

    Binomial Theorem

    Using ​nCr​​ to expand binomials like ​(1+2x)7.

    Thumbnail for Counting

    Counting

    Using permutations & combinations alongside principles to count the ways things can be selected or arranged.

    0 / 2 exercises completed
    5 skills
    Thumbnail for Counting with Restrictions

    Counting with Restrictions

    Advanced techniques for scenarios with branches, negative counting, and permutations where items need to stay together / separate.

    4 skills
    0 / 1 exercises completed
    3 skills