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1 July, 01:29

In a certain computer company, 3/5 of the programmers know fortran, 1/6 know cobol, and 1/10 know both. what fraction know neither fortran nor cobol?

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  1. 1 July, 01:43
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    Given that 3/5 know fortran

    1/6 know cobol

    1/10 know both fotran and cobol

    the fraction of programmers who knows at least one of the two programs will be:

    3/5+1/6+1/10

    =13/15

    the fraction of programmers who don't know either of the two will be:

    1-13/15

    =2/15

    thus the answer is 2/15
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