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    Name:  problem bmat.PNG
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    How shall I go about this in a quick approach? is my solution correct?

    We need the biggest and smallest chance so:

    supposed 100 students

    (55+70) - 100 AND (65+80) - 95 ?
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    Draw a Venn diagram, might help with visualising the probelm
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    (Original post by an_atheist)
    Draw a Venn diagram, might help with visualising the probelm
    I also thought about it, but couldn't translate it, so I went with the above approach. Can you check my working?
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    (Original post by Daniel Atieh)
    Name:  problem bmat.PNG
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    How shall I go about this in a quick approach? is my solution correct?

    We need the biggest and smallest chance so:

    supposed 100 students

    (55+70) - 100 AND (65+80) - 95 ?
    Seems like the best approach. I noticed it's a BMAT question. I'm doing it this year as well... Just focusing on my UKCAT at the moment.
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    Could this be something to do with upper and lower bounds?
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    I get the answer as being E.
    I know you didn't use them, but using venn diagrams helped. You label each circle as either the upper or lower limits, then find the population of A and B', then find A' and B. Add these to the 5 that are A' and B', and subtract that from 100.
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    The answer is C, but I still feel there's something wrong with my working
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    (Original post by an_atheist)
    I get the answer as being E.
    I know you didn't use them, but using venn diagrams helped. You label each circle as either the upper or lower limits, then find the population of A and B', then find A' and B. Add these to the 5 that are A' and B', and subtract that from 100.
    thanks, i will look into this method now
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    (Original post by raniafern)
    Seems like the best approach. I noticed it's a BMAT question. I'm doing it this year as well... Just focusing on my UKCAT at the moment.
    good luck.
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    (Original post by Daniel Atieh)
    good luck.
    Thanks
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    (Original post by raniafern)
    Thanks
    No problem. I would suggest you to have a look at another thread I created regarding problem solving and have a go.
 
 
 
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