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16 July, 20:53

Linda is one of 8 teachers in the Mathematics department. In how many different ways can three of the teachers be chosen so that Linda is one of the chosen teachers?

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Answers (1)
  1. 16 July, 23:17
    0
    21 ways

    Step-by-step explanation:

    a, b, c, d, e, f, g, linda

    1 2 linda

    a__ b__ __

    a__c __ __

    a__d __ __

    a__ e__ __

    a__ f__ __

    a__ g__ __

    b__c __ __

    b__d __ __

    b__ e__ __

    b__ f__ __

    b__ g__ __

    c__d __ __

    c__ e__ __

    c__ f__ __

    c__ g__ __

    d__ e__ __

    d__ f__ __

    d__ g__ __

    e__ f__ __

    e__ g__ __

    f__ g__ __

    count them

    in total

    there are

    21 triples
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