Consider a 3-by-3 square grid. Suppose you pick 5 of the squares at random. What is the probability that at least 1 line of 3 squares is formed? (3 diagonal squares is NOT a line).(adsbygoogle = window.adsbygoogle || []).push({});

I do know that there are 6 combinations of lines that are possible. After that, I'm not sure how to follow along with this.

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# Probability on a Grid

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