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In an examination,60 candidates passed science or maths.if 15 passed both subjects and 9 more passed maths than science, find the number of people who passed maths and science, probability that a candidate passed exactly one subject.

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14 answers

  1. If x passed science. then x+9 passed math. Now you know that
    x + x+9 - 15 = 60
    x=33
    Then 18 passed only science, and 27 passed only math.
    So P(only one subject) = (18+27)/60 = 45/60 = 3/4

    That's the general way to solve this. Usually you have to figure out how many passed both (or all three, or whatever). In this case, there's a shorter way.
    60 passed something
    15 passed both, so
    60-15 = 45 passed only one.

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  2. Pls and also draw the venn diagram to make it more clear thank you

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  3. So please what the percentage of candidates who passed exactly one subject

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  4. good

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  5. I dont know but pls whenever someone is trying to explain make the details clear enough thank you

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  6. Please I don't understand it

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  7. Pls draw the Venn diagram and solve it for as all to understand please so it now it was given to me as homework please do it now please

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  8. Thanks

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  9. Please can you do the work and the take a picture of it for me to see cause I still don't understand please

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  10. In an examination, 60 candidate

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  11. Yes

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  12. Solve it clearly and draw it on a venn diagram

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  13. I NOW GET IT. THANK YOU.

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  14. Grace

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