The exponential distribution is a basic distribution for constructing a number of other distributions. For example, the gamma distribution is obtained from the distribution of the sum of random variables where each variable follows an exponential distribution.

Most of the questions were pretty easy, but that last one was a humdinger.

Cost $1.55, with tip, for coffee and rolls for two, a bowl of oatmeal for her and one egg Benedict for me.

There's no need to feel naughty about facestalking would-be dates on social media before agreeing to meet up, new research says nine in 10 NZ women do it.