New posts in probability

Proving Pascal's Rule : ${{n} \choose {r}}={{n-1} \choose {r-1}}+{{n-1} \choose r}$ when $1\leq r\leq n$

Probability distribution in the coupon collector's problem

Intuition behind using complementary CDF to compute expectation for nonnegative random variables

Can a coin with an unknown bias be treated as fair?

Counterintuitive examples in probability

Do men or women have more brothers?

Using a martingale property to deduce orthogonality of some increments

Probability that the player wins a pass line bet with a 4 on the first roll

In a family with two children, what are the chances, if one of the children is a girl, that both children are girls?

Taking Seats on a Plane

Given an infinite number of monkeys and an infinite amount of time, would one of them write Hamlet?

In Russian roulette, is it best to go first?

Multiple-choice question about the probability of a random answer to itself being correct

Explain why $E(X) = \int_0^\infty (1-F_X (t)) \, dt$ for every nonnegative random variable $X$

Expected time to roll all 1 through 6 on a die

Showing that $X(t)=\int_0^tB(s)ds $ is a Gaussian process.

Calculate number of faces and dices from toss samples