Additional Mathematics - OCR- 2015

I dont think so. Someone told me afterwards what he put and it sounded logical and also filed up a page. you had to find the different possibilities of all the different combinations like 1 tulip in box one and 2 jn box two. or 3 in box 3 and none in the others etc. Then you had to add them all together. Seems about right

Reply 4

OP

Original post by youthfulwriter

I dont think so. Someone told me afterwards what he put and it sounded logical and also filed up a page. you had to find the different possibilities of all the different combinations like 1 tulip in box one and 2 jn box two. or 3 in box 3 and none in the others etc. Then you had to add them all together. Seems about right

Nope, that method is right. Both ways get the identical answer, just one is MUCH simpler. I tried both ways and you always end up with 0.13389...

Reply 5

Original post by HarrisonGCSE

Nope, that method is right. Both ways get the identical answer, just one is MUCH simpler. I tried both ways and you always end up with 0.13389...

well that is excellent news because i did the one liner... I thought I'd lost so many marks. Will they differentiate between the tow methods do you think?

Reply 6

OP

Original post by youthfulwriter

well that is excellent news because i did the one liner... I thought I'd lost so many marks. Will they differentiate between the tow methods do you think?

Well you get the right answer no matter what you do, and they never specified the method you had to use. As long as you wrote down the equation, you should get full marks.... otherwise, i would complain :wink:

Reply 7

CplSkippy

10

Horrendous!!

Skips :smile:

Reply 8

saintshero5

hi i did the exam as well.

what did you get for the n-1 n n+1 questions?

Reply 9

OP

Original post by saintshero5

hi i did the exam as well.

what did you get for the n-1 n n+1 questions?

n=33 for the first one and for the second i think something like 18.5?

Reply 10

saintshero5

what were all your answers or most of them

Reply 11

it was -17 and 12 for the second ine. And seeing as it asked for n as a positive interger, 12 was the answer.

Reply 12

OP

Original post by youthfulwriter

it was -17 and 12 for the second ine. And seeing as it asked for n as a positive interger, 12 was the answer.

What Q is this for?

Reply 13

Original post by HarrisonGCSE

What Q is this for?

Part 2, I think, of the (n-1)(n)(n+1) question, where you had to take the product of the first and second, and then that added to n etc.

Reply 14

username1974743

16

I'm crying I messed up, missed out a few questions... I'm really disappointed because I got 90% in my mocks and I've gotten straight A in every past paper, but I'm a little worried I might get B and that will be bad because maths is my strongest subject!
I hated the questions with the poles and angle between planes and stuff I had a mind block and had to skip parts of that question!

P.s. for the last Q did anyone get 25? Everyone in my school only got 24 but I found a combination to get 25 I dunno if I'm wrong or not :s-smilie:

Reply 15

OP