CSSA trial extension 1 (2 Viewers)

[tehsky]

Absolutley shocking test =[
All the years hardwork gone..i know i failed.
stuff the probability of a fair game I KNOW MY PROBABLITY OF PASSING IS QUITE IMPROBABLE .

=[=[=[

left whole of question 7 out, in 6 probably got 5 all together. pOos.

 

[rayd]

ohh jee my ass hurts.

 

[Buiboi]

he ywaht did you get for the EPSILON question?

i think i did it wrong, i wrote 4!3!2!

but imp retty sure the right one was 5!4!3!

 

[pkpkpk]

ohh jee my ass hurts.

hahah yeh jee a crapload of people got raped!

mmm some serious mental scaring for some kids right there...

 

[rayd]

he ywaht did you get for the EPSILON question?

i think i did it wrong, i wrote 4!3!2!

but imp retty sure the right one was 5!4!3!

i did 5 x 4!x3! ... is that right ? :S haha

 

[nice5uy]

dat test was a killer especially question 7 dont know about every1, but hope 2 god dat i do well and every1 else. But most unlikely, like question 3 and onwards it gets hard.
wonder if ani1 got da answer 4 question 5 to 7?

 

[filo_romz]

yeah i got 5! x 3! for that one, treat the vowels as one unit..

but ouch .. that exam hurted my ego D:

 

[Hikari Clover]

回复: Re: CSSA trial extension 1

i m back.........
this paper was harder than everything i've done b4.....

acutally i did the first part of that binomial Qs.....
all i did was just to find the coefficient of t^2r,and then put an equal sign.......

 

[Hikari Clover]

回复: Re: CSSA trial extension 1

can u guys repeat that EPSILON question again , igot something different..........

 

[rayd]

in how many ways can the letters in the word EPSILON be aranged so the vowels are together

 

[filo_romz]

Re: 回复: Re: CSSA trial extension 1

can u guys repeat that EPSILON question again , igot something difference..........

it was asking how many ways can the word be rearranged if the 3 vowels are together. So you treat the 3 vowels as one unit, so you'll have 5 units all up. And also you can rearrange the 3 vowels in 3! ways. So the answer is:

5! x 3! = 720 .. D:

 

[amyg238]

That was horrible.
Hopefully my horrible mark will be slightly better than everyone else's horrible marks,. but unlikely.

 

[Hikari Clover]

回复: Re: CSSA trial extension 1

i got 5 x 4! x 3!

 

[Hikari Clover]

回复: Re: 回复: Re: CSSA trial extension 1

it was asking how many ways can the word be rearranged if the 3 vowels are together. So you treat the 3 vowels as one unit, so you'll have 5 units all up. And also you can rearrange the 3 vowels in 3! ways. So the answer is:

5! x 3! = 720 .. D:

how about the rest 4 letters:mad1:

 

[rayd]

Re: 回复: Re: CSSA trial extension 1

it was asking how many ways can the word be rearranged if the 3 vowels are together. So you treat the 3 vowels as one unit, so you'll have 5 units all up. And also you can rearrange the 3 vowels in 3! ways. So the answer is:

5! x 3! = 720 .. D:

woot i got that aswell

 

[rayd]

Re: 回复: Re: CSSA trial extension 1

i got 5 x 4! x 3!

5x4! = 5! hehehe

 

[Hikari Clover]

回复: Re: 回复: Re: CSSA trial extension 1

how about that one , i cant remember the question...
the last part was to find the domain for f(x)+f^-1(x)
the answer is x>2?

 

[Hikari Clover]

回复: Re: 回复: Re: CSSA trial extension 1

5x4! = 5! hehehe

sorry..........

 

[rayd]

Re: 回复: Re: 回复: Re: CSSA trial extension 1

how about that one , i cant remember the question...
the last part was to find the domain for f(x)+f^-1(x)
the answer is x>2?

nah x≥1
coz F(x) was x≥0
and F^-1(x) was x≥1
so its gotta be ≥1

 

[filo_romz]

Re: 回复: Re: 回复: Re: CSSA trial extension 1

how about that one , i cant remember the question...
the last part was to find the domain for f(x)+f^-1(x)
the answer is x>2?

i just superimposed the graph, and from what i saw, the domain was x>0 .. but im not so sure =(