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Microsoft Interview Question


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Comment hidden because of low score. Click to expand.
1
of 1 vote

h = 0*h + 1/2 *t
t = 1*h + 1/2 *t
h + t = 1

h = 1/3, t = 2/3.

- kitten August 23, 2009 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 vote

@kitten can you explain ?

- cunomad August 24, 2009 | Flag Reply
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0
of 0 votes

easy.. the probability of getting a head is 0 when given a head (which is fliped) and 0.5 given a tail (which is throwed)
h = 0h + 0.5t
the probability of getting a tail is 1 when given a head (filped) and 0.5 with tail (throwed)
t = h + 0.5t
finally.. the whole probability of distribution of heads + tails is 1 because u dont have any other option
h + t = 1
easy..

- morepowerfull September 11, 2009 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 vote

the ratio is 1:2 you moron

- Anonymous September 20, 2009 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

I observe that you give snarky replies and hardly any solutions

- Anonymous September 22, 2009 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 vote

cunomand stop using job seekers to solve your homework problems!

- Anonymous September 20, 2009 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 vote

it's a simple markov chain...
use the following equations and solve.

pi = transpose(pi)*p
sigma(pi) = 1

where pi is probability matrix
| 0 1 |
|0.5 0.5|

- obersever February 08, 2011 | Flag Reply


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