You are standing on an infinite floor, made of an infinite number of infinitely long, mutually parallel wooden planks, each exactly 1 unit wide.

You have a thin needle (of negligible thickness) that is 1 unit long. You throw the needle, and it lands flat on the floor. What is the probability that the needle is contained entirely within one plank?

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You are standing on an infinite floor, made of an infinite number of infinitely long, mutually parallel wooden planks, each exactly 1 unit wide.

You have a thin needle (of negligible thickness) that is 1 unit long. You throw the needle, and it lands flat on the floor. What is the probability that the needle is contained entirely within one plank?

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