学术版求教: a simple probability(?) question# Joke - 肚皮舞运动
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Every time a man can step to his left side or right side. 50% chance on each
side.
Question: how far is the man from his original position after 1000 steps?
I thought the answer is zero, but it's not.
I even wrote a two line code to test it out. The result was not zero, but I
still don't understand.
Please help. It drives me crazy...
side.
Question: how far is the man from his original position after 1000 steps?
I thought the answer is zero, but it's not.
I even wrote a two line code to test it out. The result was not zero, but I
still don't understand.
Please help. It drives me crazy...