<ul><li>This article discusses a probability problem from Cambridge University Admission.</li><li>It defines the expected value of a discrete random variable X and demonstrates the derivation of an expression for E(X).</li><li>The problem involves collecting toy penguins from cereal boxes, where each box can contain either a daddy penguin or a mummy penguin.</li><li>The probabilities of finding a daddy penguin or a mummy penguin in a box are denoted as p and q, respectively.</li></ul>

A Cambridge University Probability Problem: Toy Penguins in Cereal Boxes

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