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Binomial Theorem need help watch

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    Just doing some extra works to check my knowledge, found these questions from the HKDSE (which is equivalent to A level), but it's really hard, anyone gives a thought?


    https://www.flickr.com/photos/124072...8/13944461528/
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    (Original post by jameeeep)
    Just doing some extra works to check my knowledge, found these questions from the HKDSE (which is equivalent to A level), but it's really hard, anyone gives a thought?


    https://www.flickr.com/photos/124072...8/13944461528/
    Why do you think they are really hard?

    They do not use any more additional knowledge than an A Level question

    The one with the ratio is badly worded - is this a translation?
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    (Original post by TenOfThem)
    Why do you think they are really hard?

    They do not use any more additional knowledge than an A Level question

    The one with the ratio is badly worded - is this a translation?
    I don't know if it is translation or not, but I agree with you it's badly worded, maybe the English of Maths teachers in Hong Kong is not very good.

    Back to the maths, I have never come across with a question like this, how would you solve it:confused:
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    (Original post by jameeeep)
    I don't know if it is translation or not, but I agree with you it's badly worded, maybe the English of Maths teachers in Hong Kong is not very good.

    Back to the maths, I have never come across with a question like this, how would you solve it:confused:
    The ratio question or generally?
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    (Original post by TenOfThem)
    The ratio question or generally?

    I would say Q2 and Q3 are hardest. If you have time please show all question. Huge appreciation
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    (Original post by jameeeep)
    I would say Q2 and Q3 are hardest. If you have time please show all question. Huge appreciation
    The ratio question has easy maths but nasty numbers - I am wondering if it means 57

    May I ask if you know about the factorial version of the binomial expansion - if you do it is just a case of cancelling a lot of the information in both Q2 and Q3
 
 
 
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