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Mistake in Maths mark scheme?? watch

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    https://8dedc505ac3fba908c50836f5905...%20Edexcel.pdf

    Check question 1.a) Surely the answer should be 2n/2n+1??
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    (Original post by Armpits)
    ^
    oh, for 1b), not 1a)

    The mark scheme's a little odd, but no, it gets to the right answer. The expansion is for twice what you're finding the sum of so the 2 needs to be taken back out again at the end.
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    (Original post by Alexion)
    ohhh didn't see the 2
 
 
 
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