General Thoughts: Mathematics (6 Viewers)

[dunjaaa]

I already did this question earlier in the thread "I did a limiting sum, so Pat can win on his 1st, 2nd 3rd,... role. 1/36 + (35/36)^2(1/36) + (35/36)^4(1/36) + .... Factorise 1/36 out and you should get 1/36{1 + (35/36)^2 + (35/36)^4 +....). Sum to infinity, 1/36{1/(1-(35/36)^2)} = 36/71."

 

[gungady8888]

Guys can we perhaps divert our attention away from fucking pat and his dice, and focus on the trout and carp? Did anyone get it out?

 

[dunjaaa]

want my solution to it? ill write it up

 

[Queenroot]

want my solution to it? Ill write it up

with the graph!!!

 

[hjed]

I had a weird stroke of genius, and made pat's winnings a geometric series:
(1/36) + (1/36)^2 + (1/36)^3

Then just applied the limiting sum, and i got 1/35 I think.

Don't think that's right, it doesn't take into account the other player's chance of winning before he wins.

I think the right answer might be the limiting sum of (1/36)^2 subbed in as a power of 1/36

 

[blinx96]

fk I've spent 2 hours on this forum and i should be studying for 3 unit hahahah -.-

 

[fatima96]

okay i am getting a 70 out of 100 if i am lucky.

Question 14 was way harder than question 15.

And i spent too much time on the r question. Also couldn't do the stupid fish question at all. Fml

my timing also sucked

question fourteen was terrible.

 

[fatima96]

Guys can we perhaps divert our attention away from fucking pat and his dice, and focus on the trout and carp? Did anyone get it out?

I am never eating fish again. Those 6 marks were robbed from me. Ruined my whole exam.

 

[churnitout]

fk I've spent 2 hours on this forum and i should be studying for 3 unit hahahah -.-

ME TOO

 

[fatima96]

Guys I feel okay now that i know you all found it hard, at least it will scale up. I was expecting it to be of medium difficulty and judging from q11 i expected it to be challenging but doable. Aiming for above 80. Time was my biggest issue too. Too god damned long and tedious.

 

[fatima96]

Can somebody upload the paper? We were not allowed to take it. so pissed off.

 

[Drongoski]

Does anybody know how to do question 16c) part two? Help would be greatly appreciated

In case no one has provided solution to 16(c):

Easy to show triangles AXY and ABC are similar.

Similarly for triangles BXY and BAD

.: XY/BC = AX/AB

.: XY/AD = BX/AB

.: XY/AD + XY/BC = BX/AB + AX/AB = (AX + BX)/AB = AB/AB = 1

.: Dividing throughout by XY:

1/XY = 1/AD + 1/BC


QED

 

[lolwot]

Can somebody upload the paper? We were not allowed to take it. so pissed off.

http://community.boredofstudies.org/showthread.php?t=313139&p=6440262&viewfull=1#post6440262

 

[AsianFrustratio]

Honestly, that exam was easy as hell Worst case scenario should still be 90+ raw, mostly sillies -.-

Does anyone have a solution for that last question?

 

[yus456]

Honestly, that exam was easy as hell Worst case scenario should still be 90+ raw, mostly sillies -.-

Does anyone have a solution for that last question?

Please tell me you are joking lol

 

[mac1996]

guys what did u get for all the parts of the probability question?

 

[Randox]

Honestly, that exam was easy as hell Worst case scenario should still be 90+ raw, mostly sillies -.-

Does anyone have a solution for that last question?

yeah i got ~101/100 SO easy. lucky i went so well because 90 raw will align to 90 HSC mark

 

[Antjim]

I found it too hard. I spent a lot of time on maths and in past papers I would get an average of 75-80. Today I think I'll be lucky if I passed.

 

[Antjim]

Too hard. I spent a lot of time on maths and got an average of 75-80 in past papers. Don't even think I passed today

 

[SophxMusic]

Waiting for the SMH rant..,


Sent from my iPhone using Tapatalk - now Free