Conditional probability occurs when it is given that something has happened. (Hint: look for the word “given” in the question. The probability that a tennis player wins the first set of a ...

In this tree diagram, a white sock has been selected and put on, so there are no longer 5 white socks in the drawer. There are only 4. The total number of socks has also gone from 9 to 8.

The basic idea of a probability tree is to use the properties of probability to make a branching diagram of different outcomes. The most important relevant law of probability is that the ...

"The Ordinary Level paper presented a very typical and manageable set of questions spanning the usual suspects of Trigonometry, Coordinate Geometry, ...