SC mathematics Marathon (1 Viewer)

[dionb2014]

C can't equal 1 because they have to be different integers.
C can't equal 5 beacuse they have to be integers.
C can't equal 9 because they can't be the same.
:. C equals 12. Thanks for correcting me.

 

[lath]

If a, b, and c are different positive integers, what is a possible value for c when (ab)^2=abc

a) 1
b) 5
c) 9
d) 12



Working out as well

(ab)^2 = abc
therefore ab = c
as a result, it cant be 1 (coz then a = b = 1)
it cant be 5 (coz then 2 pronumerals = 5)
it cant be 9 (coz 2 pronumerals would either be 3 or 9)
therefore it MUST = 12 (e.g. 3 x 4 = 12 OR 6 x 2 = 12)

 

[lath]

got beaten

 

[RealiseNothing]

What are you guys aiming for on Tuesday?

 

[dionb2014]

Was 97 but since I got that question wrong to begin with make it <30

 

[lath]

What are you guys aiming for on Tuesday?

95+ would be nice

 

[lath]

What are you guys aiming for on Tuesday?

wat about u?

 

[RealiseNothing]

Was 97 but since I got that question wrong to begin with make it <30

If it's any re-assurance, the question I gave was the last multiple choice question of a past paper. You have a good chance at 97 from what I've seen.

 

[RealiseNothing]

wat about u?

Hoping for 100, but silly mistakes might prevent that.

I'm not sure how to approach the test. Should you do it fairly quick and spend lots of time checking for silly mistakes, or take your time.

Anyway, good luck everyone for Tuesday.

 

[dionb2014]

Thanks, Im going to do a practice paper tonight from 2009 to get myself warmed up.

 

[lath]

Hoping for 100, but silly mistakes might prevent that.

I'm not sure how to approach the test. Should you do it fairly quick and spend lots of time checking for silly mistakes, or take your time.

Anyway, good luck everyone for Tuesday.

Have u done past papers for school cert. How much time does it take you to finish each section?

 

[RealiseNothing]

Have u done past papers for school cert. How much time does it take you to finish each section?

Approximates:

Non-calculator - 5 minutes
Multiple choice - 20 minutes
Correct/Incorrect - 5-10 mins?(not sure about this one)
Q81-Q84 - Maybe 10-15mins?

That's if I don't second guess myself etc. Also varies depending on the amount of calculator questions.

I'll do one tonight and time each section.

 

[dionb2014]

W should do the same year so then when we come beck tonight we can discuss questions

 

[dionb2014]

Yeah, 2009?

 

[RealiseNothing]

Yeah, 2009?

Do 2009, I'll do it soon.

 

[hungwell1337]

u kids should do the 1 hour challenge

leave after the 1st hour.

 

[RealiseNothing]

u kids should do the 1 hour challenge

leave after the 1st hour.

If I tried, I could leave after 30 minutes.

 

[hungwell1337]

If I tried, I could leave after 30 minutes.

but you can only leave after the 1st hour

 

[RealiseNothing]

Just tried to do the 2009 exam as fast as I could.

Finished it in 21 minutes and 50 seconds. Scored 95%. lols

 

[dionb2014]

the only question I found difficult was 84 e.