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# Edexcel IGCSE Mathematics June 2016 Official Thread

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1. (Original post by lattu27)
Did the question say to give reasons?
Nope, just to calculate it
2. (Original post by lattu27)
Did the question say to give reasons?
No, but i was just saying them to you. But i did include the reasons in my workings
3. For the spheres question i got 1439 spheres. For last question i got 188. For probability i got 24/85 (not exact, i cant remember, it was 20 something over 80 something. For the equation of a straight line u had to multiply by 4 cuzz it said integers. Ended up getting -19 as C. Circle theorems i got 69. Anyone agree to any of these ????
4. (Original post by Castro300)
For the spheres question i got 1439 spheres. For last question i got 188. For probability i got 24/85 (not exact, i cant remember, it was 20 something over 80 something. For the equation of a straight line u had to multiply by 4 cuzz it said integers. Ended up getting -19 as C. Circle theorems i got 69. Anyone agree to any of these ????
I only remember the circle theorem one. and i got 63.So did 90% of my friends who also sat the exam. And the probability was 25/85 or smth.
5. (Original post by Castro300)
For the spheres question i got 1439 spheres. For last question i got 188. For probability i got 24/85 (not exact, i cant remember, it was 20 something over 80 something. For the equation of a straight line u had to multiply by 4 cuzz it said integers. Ended up getting -19 as C. Circle theorems i got 69. Anyone agree to any of these ????
Spheres question was around 1600. Last question is right. Probability is right. C is right. Circle theorems was a bit lower, around 63 I think
6. are you all sure that the answer of similarity was 102.4 or something close?? I got that but most of my friends said its wrong they told me that it is 256...
7. (Original post by Abodee1)
are you all sure that the answer of similarity was 102.4 or something close?? I got that but most of my friends said its wrong they told me that it is 256...
Defo was 102.4 dw
8. Omg I got all of what you did apart from the circle theorems one, I think that was 63
9. (Original post by abid_zaidi)
Omg I got all of what you did apart from the circle theorems one, I think that was 63
what did you use for the triangle q sine invers or tan invers ?
10. (Original post by Castro300)
For the spheres question i got 1439 spheres. For last question i got 188. For probability i got 24/85 (not exact, i cant remember, it was 20 something over 80 something. For the equation of a straight line u had to multiply by 4 cuzz it said integers. Ended up getting -19 as C. Circle theorems i got 69. Anyone agree to any of these ????
Yeah, all are right, except for the circle theorem one, I think it was 63.

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11. (Original post by aaljhfgahsj)
Nope..dude the cleverest guy in my school who got 100% in every maths exam..no ****ing joke got 1439 as well, as well as a lot of my friends..

The question wanted the greatest number of cubes, right?
So that would be the largest/smallest....

So you find the upper bound of of the cubes length, so 4.55cm (convert to 45.5mm)
And the lower bound of the radius, so 2.5mm

Then you put them into the formulae and divide...

So 45.5 cubed/4/3 x pi x 2.5cubed = 1439.214.....
So 1439 whole cubes
We did it with our maths teacher. The answer is 1637 as you have to do 45.75 cubed to get the Upper Bound for the volume of the cube in question. Trust me I got 1439 too and it is wrong.
12. (Original post by BobbyC12)
We did it with our maths teacher. The answer is 1637 as you have to do 45.75 cubed to get the Upper Bound for the volume of the cube in question. Trust me I got 1439 too and it is wrong.
Yeah I found out ((

Hopefully will pick up 3/4 out of 6
13. Omg, yeah sorry, 63, dunno why i put 69. It was 63. So whats this deal with it being 1600 not 1439 spheres???
14. (Original post by Castro300)
Omg, yeah sorry, 63, dunno why i put 69. It was 63. So whats this deal with it being 1600 not 1439 spheres???
Idk. I got 1440 too.

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15. (Original post by WhiteX)
what did you use for the triangle q sine invers or tan invers ?
I don't... really remember. Sorry
16. (Original post by Droneon)
Idk. I got 1440 too.

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Hopefully if enough people made the same mistake, they might make a "special case" in the mark scheme and award something like M4 A0 so we get a lot of the marks available!
17. what did you guys get for the cumulative frequency one? I got 18 and 18.5
18. (Original post by ForeverFrench)
I think I've failed
join the club
19. (Original post by aaljhfgahsj)
Hopefully if enough people made the same mistake, they might make a "special case" in the mark scheme and award something like M4 A0 so we get a lot of the marks available!
Yas hopefully

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20. (Original post by abid_zaidi)
what did you guys get for the cumulative frequency one? I got 18 and 18.5
I got samez

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