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gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Easiest problem ever, but I forgot how to do them, dw:1361117139126:dw Can someone show me step by step how to solve this or create a problem giving me an example? Thanks.!
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
\[1\frac{ 694 }{ 896 }\] do you mean?
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
then p4 do you mean its power or 4 is multiplied?
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
like p4 or \[p^4\]
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
I have no idea... It just says 6P4,
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Noo, its not that, I'll take a screenshot
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
ok... i am waiting for screenshot.
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
This is the problem,
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
this is Permutation.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
ohh..its permutation!
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
I also have this problem that includes a exclamation mark, dw:1361117585779:dw Do you know what its for?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
& whats permutation? O_O I have never ever heard of that
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
\(!\) means a factorial.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
\(n!= n(n1)(n2).......3.2.1\) when n is a whole number. like for example 5! = 5*4*3*2*1 = 120
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
answer is 1 it means that you need to expand 6 as 4 times and 8 as 6 times.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
before getting to permutation, you should know what a factorial ! is .
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
OH.! so I had something like 10! I would have to do 10*9*8*7*6*5*4*3*2*1= etc..?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
yes, thats correct.
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
6P4= 6*5*4*3 and 8P6= 8*7*6*5*4*3
 one year ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.0
yes you are correct.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
do you want to know how to get that^ ?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
I feel like I've done this stuff in 8th grade but had forgotten how to do some of this. These questions are for my precal class & I found it odd that I had a probability question in there
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
\(\huge ^nP_r = \dfrac{n!}{(nr)!}\)
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
So basically I had to do the factorial (!) to the 6P & 8P?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
\(\huge ^nP_r = \dfrac{n!}{(nr)!} \\\huge ^6P_4 = \dfrac{6!}{(2)!} \\ \huge 8P_6 = \dfrac{8!}{(2)!}\)
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Everything on the left side of the = is confusing to me
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
in the formula of nPr ? its just a formula, so for 6P4, i plugged in n=6 and r=4 in the standard formula.
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
How would you know which ones to plug in? Because in one you have 6P4 & in the next 8P6, I don't get how you go to that?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
n is before P , r is after P . in 6P4 , 6 is before P (so, n=6) and 4 is after P (so r=4) does this makes sense ?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Ah, it does now.! :) Thanks you guys both for explaining this to me.!
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
Thank me when you get to correct answer.
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
What do you mean?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
i meant to ask you, whether you could now figure out the answer of that question...
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
I do the factorial, 8*7*6*5*4*3*2*1, I thought?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
& then divide my answer by 2?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
thats for 8P2
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Then I'm lost again,
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
i never said you are wrong. its just not the final answer.
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Then I do the same with the 6
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
6P4 = 6*5*4*3 8P2= 8*7*6*5*4*3 Question asks, 1 6P4/8P2 = 1 6*5 / 8*7*6*5 = 1 1/(8*7) ok ?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Ah, I wasnt paying attention to the 1,
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Would I have to subtract the 1 from the 6 & start factoring 5?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
no... first division operation is performed, so 6*5*4*3 will get cancelled from numerator and denominator, and what remains is just 1 1/(8*7) which i've already shown.
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Thats confusing
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
ok, clear till this : 6P4 = 6*5*4*3 8P2= 8*7*6*5*4*3
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Got that...
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
now divide them 6P4/8P2 =.... ?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
I got 0.0178 etc... Thats not right..
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
keep it in fractions..
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
I got 360 from 6*5*4*3 & 20160 from the factorial of 8.
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
How would I keep it in fractions?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
you can also cancel out like this : dw:1361120576575:dw got that ?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
Ah, got it.! I wasnt thinking about canceling out
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
ask if any more doubts.
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
What happened to the 4 & 2?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
i just realized i mistyped 8P6 (and have written 8P2 instead) 4 and 2 where ?
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
The 4 after the P and the 2 after the other P
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
oh, we used the formula, right ? 64 = 2, so 2! in the denominator 86= 2, so 2! in the denominator
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
OH.! Ok I get it.!
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
1/56 wasnt correct, could it be 55/56 by any chance?
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
?? you forgot '1...' again ? 1 1/(7*8)= 11/56=(561)/56 = 55/56
 one year ago

gjhfdfg Group TitleBest ResponseYou've already chosen the best response.0
*face palm* Thank you.
 one year ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
welcome ^_^
 one year ago
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