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    • Thread Starter

    There are 180 students at a college following a general course in computing. Students on
    this course can choose to take up to three extra options.
    112 take systems support,
    70 take developing software,
    81 take networking,
    35 take developing software and systems support,
    28 take networking and developing software,
    40 take systems support and networking,
    4 take all three extra options.

    Students who want to become technicians take systems support and networking. Given that a randomly chosen student wants to become a technician, find the probability that this student takes all three extra options.

    Can someone explain how to do this question and the logic behind it - I have drawn a CORRECT venn diagram - checked by my teacher and mark scheme

    • Thread Starter

    Ignore question stupid calculation error

    Is the answer 0.1? If correct, will give you the solution...
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Updated: April 6, 2011

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