### Quick description

This is a navigation page with links to articles on useful tips for answering probability questions.

### Prerequisites

The basic definitions given in a typical first probability course at university.

Use the fact that the variances of independent random variables add together

To compute covariance, use bilinearity

Bounding probabilities by expectations

One way of working out the probability of a conjunction of dependent events

How to use the inclusion-exclusion formula

Condition on the first thing that happens

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