Probability is a measure of the likelihood of events happening. The greater the proportion of times an event can happen the greater (or more likely) the probability. Events can be ordered by the ...

The outcomes of rolling a six-sided die are: 1, 2, 3, 4, 5, 6. A probability of zero means an outcome is impossible. A probability of 1 means an outcome is certain ...

Source: Thunder Bay, Canada. Used with permission of Dan Hunt, MD. Coincidences attract our attention because they seem weird, odd, or unlikely. Their improbability stimulates wonder—“what are the ...

Sir, I think that most of your readers must have heard of the Monty Hall problem many times (“Stick-or-switch inspires an onion of a puzzle”, Tim Harford, October 7). Here is a somewhat subtler puzzle ...