The Tim Hortons coffee chain has made some changes to its iconic Roll up the Rim contest, including the addition of "digital rolls." A statistician explains how this changes the odds of winning.
With some big prizes are on offer in the latest competition from the fast food giant, best to see what the numbers say.
This month, we're talking risk. Three experts give their perspective on how long you might live, how to deal with loneliness – and how to step outside your comfort zone.
The math behind all the probabilities being discussed for tonight's Powerball drawing assumes each number is equally likely to be chosen. Is that what really happens?
A mathematician looks at the odds.