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problem

Three distinct vertices are randomly selected among the five vertices of a regular pentagon. Let pp be the probability that the triangle formed by the chosen vertices is acute. Compute 10p10 p.
Plain-text mathematical notation (without MathML)
Three distinct vertices are randomly selected among the five vertices of a regular pentagon. Let p be the probability that the triangle formed by the chosen vertices is acute. Compute 10p.
Original LaTeX notation
Three distinct vertices are randomly selected among the five vertices of a regular pentagon. Let $p$ be the probability that the triangle formed by the chosen vertices is acute. Compute $10 p$.

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