Probability Question (1 Viewer)

[myg0t]

What was the answer for the last one of the probabilty q's involving the di.

My answer turned about to be one thousand something over one thousand something.

right/wrong?

stupid exam, too many questions in too little time...

 

[mizz_smee]

thats what i got two but i don't think it was right
it looked wrong

 

[Bi0mic]

also got that .. i thought it was right but .. meh

 

[GromReaper]

I got 1295/1296....God knows if it's anywhere near right. *Shrug.*

 

[becany]

i got no idea....but the stupid turns thing was so confusing
theres like 3 possibilities of it being more than 45...i just didnt know what to put as the bottom number..
how many possibilities are there?? cuz i put 3 / 36! - cuz the first point has like 36 possibilities to choose from the other turn..and the next one has 35...etc? ahhh i got no idea, but i put probability as 1! haha

 

[euphoric]

oh no i got it wrongs ><
i got something like 35/36
dammits ><

 

[greeninsanity]

i put 431/432 or something like that...
...which made sense to me at the time but from other ppls answers would appear to be wrong.

 

[Willmaker]

This is what I wrote on a different thread.
Originally Posted by Willmaker
What I did was find the probability of you getting higher that 45 which ended up to be:

(1/6 x 1/6) x (1/6 x 1/6) x 2 - 5x5 then 5x5 or 5x5 then 5x4 is the only way you could get higher than 45 so I then went 1-(that answer) which ended up to be 647/648. Of course I could be wrong but thats the way I did it.

 

[Smurfwow]

I put 431/432

 

[Sweet_Lemon]

it's actually 1291/1296

 

[greeninsanity]

it's actually 1291/1296

how do you work it out?

 

[+GriM ReApeR+]

erm i got 8/9 >.<"

 

[Sweet_Lemon]

how do you work it out?

let me see...should be

P(<45) = 1 - [ (1/36 *1/36) + (1/36 * 2/36*) + (2/36 * 1/36) ]

think tat's how i wrote it...

 

[ay_caramba]

erm i got 8/9 >.<"

omg thats what i got! i drew up a little table thing

 

[+GriM ReApeR+]

lol same here!

 

[prusso]

1291/1296 is wot i got

 

[mizz_smee]

it's actually 1291/1296

that's my big weird number
but i did it different
i just went 36x36=1296
that is the total possible outcomes
and then there were only 5 ways to get over 45
so i wrote down P(<45)=1 - 5/1296
which = 1291/1296
i hope it is right
probability is not usually my strong point

 

[ay_caramba]

lol same here!

haha it may just be that we're the smart minority here

 

[Sweet_Lemon]

20 20

20 20

25 25

there's 5 ways connect it..
I remember tat came up in the past hsc some where before~~

 

[maddison10]

1291/1296 YEHESS

thats exactly wat i got, spent a hell of alot of time on it and it just seemed wrong but no others agree it shud be right