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# Edexcel IGCSE 3H Mark Scheme (by Teacher) Watch

What did you get? Better/worse than expected?
2. How many marks will be deducted if I solved the probability question as if it was done with replacement not without? Also, how many marks will I lose if I used the surface area rules instead of the volume ones in the spheres question?
3. Can I know how many marks I'll approximately lose if I solved the probability question as if it was done with replacement? Also, how many marks will I lose in the sphere question if I wrote a few right steps then messed up at the end and used the surface area rules instead of the volume ones?
4. (Original post by Believerindreams)
Can I know how many marks I'll approximately lose if I solved the probability question as if it was done with replacement? Also, how many marks will I lose in the sphere question if I wrote a few right steps then messed up at the end and used the surface area rules instead of the volume ones?
For the probability one you'd most likely get 0 as you didn't have the right method, for the sphere one you'd get all the method marks up until where you messed up (so 2/3 marks)
5. i thought more people would care tbh lol
6. Hey, I actually just checked my past papers and the mark schemes. I might actually be awarded full marks since the question did not state whether or not they were replaced. Also, in the worst circumstances, I will be deducted one mark for accuracy but will gain all method marks. So, yayyyyyyy. I'm mentally dancing right now haha.
7. 47
8. 88 (I think).
I was hoping for 82-85, so I'm happy.
As long as I get an A*, I'm fine.

I didn't mark the probability one as I used replacement, I just mark for a worst case scenario so I can be prepared and expecting when it happens..
9. me too bros.. i was also searching for the element in the question that states that we need to replace...but couldnt find it.. so i just went with it..

and if u have seen past papers .. the answer of replacement will also be accepted.. but max of 3 will be given .. i m sure if ur answer is correct.. by the way i got 19/81 .. but with replacement...
10. (Original post by Helper OF ALL)
me too bros.. i was also searching for the element in the question that states that we need to replace...but couldnt find it.. so i just went with it..

and if u have seen past papers .. the answer of replacement will also be accepted.. but max of 3 will be given .. i m sure if ur answer is correct.. by the way i got 19/81 .. but with replacement...
I got 19/81 without the replacement so I'll presume that it's correct?
That mean's I think I've got 91/100
11. The upper bound is 4.55?

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Updated: June 5, 2016
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