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# STEP Prep Thread 2016 (Mark. II)

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Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. (Original post by jjsnyder)
Did anyone do 8? That was a beautiful question
EDIT: My favourite of all my questions actually

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My favourite was q7, if I did it correctly at least, if not q8 or q1 were nice too imo

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2. did anyone get to the point where they had 301^2 - 900 in question 1 and had to find two factors?
3. (Original post by 13 1 20 8 42)
lol resolution not great there, try again

Attachment 550367

(I guess they will technically be parts of circles due to the sign concerns)
ah i got as far f(x)= and didn't really know what to do next so just left it like that. Thats probably why I didn't have a clue what to put when they asked you to state what k meant at the end.
4. (Original post by johnthedog)
did anyone get to the point where they had 301^2 - 900 in question 1 and had to find two factors?
It's the difference of two squares.
5. (Original post by nitromeguy)
For question 10, was lambda = 2+root5, e = root5 - 2? I wasn't entirely confident on this one
Just redid Q10, got 2+root5 again for lambda, perhaps 3 of my friends all got the same but wrong answer, maybe there is a popular mistake but I can't spot one!

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6. Anyone do question 12 and just get the answer 1/2 for everything?
7. (Original post by jjsnyder)
Did anyone do 8? That was a beautiful question
EDIT: My favourite of all my questions actually

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I did, it was my favourite too!
8. (Original post by drandy76)
My favourite was q7, if I did it correctly at least, if not q8 or q1 were nice too imo

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I didn't really like Q1, it was quite dull and the bulk of it was just expanding things (unless there is a trick I missed?) Whereas the end result in Q8 was very nice imo

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9. (Original post by jackhkeynes)
it's the difference of two squares.
oh for **** ******** ****** ************ sake
10. Q13 is the one that I am slightly dubious about, I worked backwards from the answer for the second part, did anyone get a full on this? If so what was the answer to 'Write down the probability that the second email is delivered after time t'

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11. (Original post by jjsnyder)
Just redid Q10, got 2+root5 again for lambda, perhaps 3 of my friends all got the same but wrong answer, maybe there is a popular mistake but I can't spot one!

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What did your friends actually get cos I was quite happy when i got e to be a value 0<e<1/3 i mean i thought that was quite a small margin?
12. (Original post by jjsnyder)
I didn't really like Q1, it was quite dull and the bulk of it was just expanding things (unless there is a trick I missed?) Whereas the end result in Q8 was very nice imo

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Nah I did it the same way too, it was just a nice relaxing way to start the paper

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13. (Original post by smartalan73)
What did your friends actually get cos I was quite happy when i got e to be a value 0<e<1/3 i mean i thought that was quite a small margin?
Think they got 2+root3 for lambda, but I can't remember really. I just assumed I was wrong because 3 of them had got the same answer.

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14. (Original post by jjsnyder)
Think they got 2+root3 for lambda, but I can't remember really. I just assumed I was wrong because 3 of them had got the same answer.

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but 2+rt5 is the correct ans innit ?
15. (Original post by drandy76)
Nah I did it the same way too, it was just a nice relaxing way to start the paper

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It was my last question actually, I attempted it first and ended up not being able to expand (1+X)^4 came back to it at the end and got it though.

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16. would quite like one of them fancy polls to gauge how hard the paper was compared to previous years.
17. (Original post by jjsnyder)
It was my last question actually, I attempted it first and ended up not being able to expand (1+X)^4 came back to it at the end and got it though.

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First thing I did was draw a massive Pascal's triangle up to the 9th or 10th row so I wouldn't make any errors, it was just the first question out of those I initially wanted to attempt and so I just went straight in

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18. (Original post by Duke Glacia)
but 2+rt5 is the correct ans innit ?
its what everyone on here so far seems to have got so i hope so
19. (Original post by smartalan73)
its what everyone on here so far seems to have got so i hope so
Yay with that many people it should be correct hopefully, and I was pretty sure of the working I did just now, so hopefully we are right

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20. (Original post by smartalan73)
What did your friends actually get cos I was quite happy when i got e to be a value 0<e<1/3 i mean i thought that was quite a small margin?
2 + sqrt(5) is correct.

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