TWO Sigma Interview Question
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Interview Question for Software Engineer at TWO Sigma:
Nov 17, 2010
Given a coin with probability x (= U[0, 1] showing head at each flip, what is the probability that you got a second head after getting the first one.
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2 of 4 people found this helpful
Jan 13, 2011
each coin toss is independant
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1 of 2 people found this helpful
Jan 31, 2011
1/2
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1 of 4 people found this helpful
Jul 2, 2011
The probability of the first coin being a head (random variable X) is "x1". The probability of the second coin being a head is P(x2 | X1 = head) (conditional probability). This is simply x^2. But we don't know what that value is, so you can't give a numeric answer.
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Apr 8, 2012
Bayesian inference.
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