math paper 42

[fbyfbyfby]

i just finished math ppr 4 how did u find d ppr guys? extended was easy.. except prism ques. what do u guys think about it?

 

[cookies&cream]

I'm pretty good at math.. I just didn't have time. If I did, I might have given the questions more thought. Need to work on my speed
In my opinion, it was the most challenging exam ever.
That last question was a pain ._.

 

[fbyfbyfby]

I'm pretty good at math.. I just didn't have time. If I did, I might have given the questions more thought. Need to work on my speed
In my opinion, it was the most challenging exam ever.
That last question was a pain ._.

yes u r right. thnx God i dont ve prob. with timing but i guess i needed little mo pract. but yea i sloved all d years since 2001 n this one was little bit diff. d way how d ques asked..

 

[ThatBumbleBee]

naa it was pretty easy
except for the last one. anyone know how to solve it?

 

[fbyfbyfby]

naa it was pretty easy
except for the last one. anyone know how to solve it?

last que is n the term right?

 

[ThatBumbleBee]

yeah
something like: 'P(n-1) and p
find the value of n'
that whole question was confusing af

 

[ThatBumbleBee]

but on the upside i got the answer to the fertilizers question just in time

 

[fbyfbyfby]

so

but on the upside i got the answer to the fertilizers question just in time

what was d ans? even i could not solve dat d que btw :S

 

[ThatBumbleBee]

it was x=4.5 or x=-3

 

[fbyfbyfby]

o

it was x=4.5 or x=-3

o yea i got that ans. btw u can get d ans by usin calc ;D but could not get n th term but ppl r sayin ans was 20 ? for n th.

 

[ThatBumbleBee]

yeah some of my classmates said the same thing
but i have no idea how they came to that conclusion

 

[Ozoman]

For the last question, n=20

they gave you the angle P1OP2 which was 18.4

18.4/360 gives you 19.55
This means that you have space for 19.55 triangles but we cant have half a triangle so it ends up only fitting 19 triangles.


We know that the last triangle was n-1 (in the question)
We also know that the last triangle is the 19th one, because thats all that we can fit.

n-1 = 19
n = 20

 

[fbyfbyfby]

yeah some of my classmates said the same thing
but i have no idea how they came to that conclusion

even me i ve no idea how they get 20 :S