maths

A hockey match is played from 3 p.m. to 5 p.m. A man arrives late for the match. What is the probability that he misses the only goal of the match which is scored at the 20th minute of the match?

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  1. the game is 120 minutes long.

    He misses the goal if he arrives during the last 100 minutes, so

    p = 100/120

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