Quote of the moment: "I'm sure that there was a mistake on that paper." - Will, just after his P2 exam.
Apparently not, according to Vicky! D'oh! I tried it forwards, backwards, with my back-up calculator (thanks to my paranoid father), and I always got the same answer, nothing like the one on the paper. Oops!
Other than that P2 went fine, fortunately. I owned P1, naturallement! So I'm on track so far :D
mmm, bear in mind that I thought I owned my exams and I got a shitty 2Bs and a C. No offence to anyone who thinks that this is t3h ub3r-l3wt or something.
ReplyDeleteIn that case, I won't be offended then. :P
ReplyDeleteBear in mind Rob m8 that I have done 15 different P2 papers in the last 2 months, 6 of them twice.
On the other hand, I did think I did ok in maths last time... 25% for P2...
Rob wins.
I'm curious now - What was the question???
ReplyDeleteEmma
Erm... something like:
ReplyDeleteThe first term is 1.2
The ratio is 1.2
Show that the sum of the first 70 terms = 36*** (*meaning I can't remember)
I got 2090000 (3 s.f.)
Oops!
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Sn = a(1 - r^n)/(1 - r)
S(70) = 1.2(1 - 1.2^70)/(1 - 1.2)
= (1.2/(-0.2)) x (1 - 1.2^70)
= -6(1 - 1.2^70)
= 2093327.742...
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What did I do wrong?!