Data Science Manager Interview Questions

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You are on a number line and you can jump to one of the neighbor points with equal probability, with the exception of n=0 where you can't go to negative numbers but have to come back to n=1. If you start at n=44, what is the expected number of steps to reach n=4444?
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Data Scientist

Interviewed at Groupon

2.8
Sep 21, 2015

You are on a number line and you can jump to one of the neighbor points with equal probability, with the exception of n=0 where you can't go to negative numbers but have to come back to n=1. If you start at n=44, what is the expected number of steps to reach n=4444?

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