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sritama
Group Title
A fair die is rolled (2n+1) times.The probability that the faces with even number show odd number of times is
a) (3n+1)/(4n+2) b) 3/4
c)2/3 d)1/2
 one year ago
 one year ago
sritama Group Title
A fair die is rolled (2n+1) times.The probability that the faces with even number show odd number of times is a) (3n+1)/(4n+2) b) 3/4 c)2/3 d)1/2
 one year ago
 one year ago

This Question is Closed

wio Group TitleBest ResponseYou've already chosen the best response.1
The whole roll 2n+1 times, get k even numbered die is a binomial distribution but I wonder
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
if the symmetry of the probability can't make this a bit easier.
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
We can definitely use the fact that it is multiple choice though...
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
If \(n=0\) then clearly getting an even face means you win, so the probability is \(1/2\).
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
Which knocks out b and c
 one year ago

sritama Group TitleBest ResponseYou've already chosen the best response.0
i am getting d as the answer , but the book is saying a.
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
When \(n=1\). what is the probability?
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
You have three rolls, if you roll 1 or 3 evens, you win
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
oops, that doesn't actually matter, when \(n=1\) then a) is still 1/2
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
They need to be different.
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
n=2 gives 7/10 for a, but d is still 1/2 so.... 5 rolls, what is the probability of odd even rolls
 one year ago

wio Group TitleBest ResponseYou've already chosen the best response.1
Weird... There is no explanation for a)?
 one year ago
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