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a six faced fair dice is tnown until 1 comes , then the probability that 1 comes in even no. of trails is
Last edited by juantheron (2011-12-17 05:45:46)
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Hi juantheron;
You want the chance that a 1 comes up on an even throw?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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hi guys
i got 5/11.
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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yes answer given as
options
(1) 5/11 (2) 5/6 (3) 6/11 (4) 1/6
yes bobbym
explanation required
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Hi;
1) is correct.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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thanks bobbym,anonimnystefy
but how can i get this
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Hi;
Tree diagram and then you sum the series it produces. The one I have given above. If you do not understand please speak up.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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hi bobbym
that is unnecessary.
juantheron
here's how you could do it with less work.
let p be the probability you want.
first we don't want a 1 on the first run,so the probability p will be:
p=5/6 +something.
now we have to see what that something is.
so that something represents the case when something other than a 1,so we write:
p=5/6 + 1/6 *(something)
this new something represents the probability that we get 1 from now on,and because we want one here we will calculate the probability for it:
p=5/6 + 1/6 *(1/6 + something)
this something is the case where a 1 didn't show up in neither first or second run so it's:
p=5/6 + 1/6 *(1/6 + 5/6*something)
and this final something represents the probability that we get a 1 from here on out and it's the same as p,so we are basically writing this:
p=5/6 + 1/6 *(1/6 + 5/6 * p)
now just find p and you got your probability
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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thanks anonimnystefy but i did not understand in well manner
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Hi all;
anonimnystefy's idea is very nice but a little difficult to grasp that is why I gave the tree and geometric series answer. They are somewhat easier.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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yes you are right
bobbym would you like to explain your tree diagram
thanks
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Hi;
First let me say to anonimnystefy, very good solution!
juantheron:
It will take a while to draw a decent diagram, please hold.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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well it's not my solution.i got the idea here:http://www.youtube.com/watch?v=_i_BONRM … Twkb65jI9G
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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Hi anonimnystefy;
I already knew that but R.I.P.O.S.T.P.
To Juan;
Look at the diagram you are concerned with the nodes H,J and L. Count down the branches to see the patter that will form the series.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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thanks bobbym got it
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Hi;
Are you sure?
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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hi bobbym
what does R.I.P.O.S.T.P. stand for?
Last edited by anonimnystefy (2011-12-17 06:56:06)
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
Offline
what does R.I.P.O.S.T.P. stand for?
Research Is Part Of Solving The Problem.
Hmmm, I would thought the other part of that statement would have caused you more consternation.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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Yes got it
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