Probability Question (1 Viewer)

myg0t

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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...
 

Bi0mic

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

becany

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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

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

greeninsanity

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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

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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.
 

Sweet_Lemon

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greeninsanity said:
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...
 

mizz_smee

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Sweet_Lemon said:
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
 

Sweet_Lemon

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20 20

20 20

25 25

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

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