# General Thoughts: Mathematics Extension 1 (1 Viewer)

#### sluggo

##### New Member
The probability A wins was 1/2 so you find an equation for probability up to n and then multiply both sidens by 2^(n+1) to obtain the answer.
Actually I think you multiplied by 2^(2n+1) in the end

#### Bump

##### New Member
what hsc mark would 58/70 be?

#### Dellrune

##### Member
stoked easy exam! might lose 1 mark on the final question since my wording was kind of poor. Hopefully zero sillies since i checked twice

#### kawaiipotato

##### Well-Known Member
Was c = 5, a = 2, n = sqrt11 /2?

##### Breaking the limits.
what hsc mark would 58/70 be?
I believe that's a definite E4 - probably low to mid-90's.

#### thecondimentman

##### New Member
pretty sure that's what I had. Can't remember exactly what "a" was

#### apurba

##### Member
what will 66/70 align to?

#### SNT k

##### New Member
what did people get for question 8?

#### SNT k

##### New Member
the limit question with sin(x-3) on top?

#### thecondimentman

##### New Member
I did 1/5, bit of a guess

#### Mathsisfun15

##### Active Member
Out of curiosity would 70/70 always align to 100 since they separate state ranks by your working do they separate 100 on working

#### fionaying

##### New Member
What is the height of the mountain or whatever in the 3d trig quesiton?

#### Thjv

##### Member
what did people get for question 8?
its known that sinx/x = 1

so lim x-> 3 1/(x+2) = 1/5

#### Thjv

##### Member
Out of curiosity would 70/70 always align to 100 since they separate state ranks by your working do they separate 100 on working
100

There's probably a low 100 and a high 100

i got 910

#### Drsoccerball

##### Well-Known Member
its known that sinx/x = 1

so lim x-> 3 1/(x+2) = 1/5
lel or you can sub it in your calculator 2 seconds...

#### Thjv

##### Member
lel or you can sub it in your calculator 2 seconds...
took me 1 second to do it in my head..