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Weird problem

Main post link -> https://brilliant.org/assessment/s/geometry-and-combinatorics/845915/

I don't understand what we need to find in this problem...

I mean I don't understand the concept of 'expected'.

Does the answer demand that I count all the possibilities for consecutive heads like in case of occurrence of only one H, there is no possibility of getting a consecutive heads-pair.. And in case of two heads, there's a possibility of 24 because HH can occur at 24 distinct places in the toss .

Am I getting the problem right?

Note by Aasif Khan
4 years ago

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I think you are just misunderstanding the meaning of expected value but this should help. See side bar for parts 2 and 3. Arkan Megraoui · 4 years ago

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@Arkan Megraoui I still do not understand how to use that concept in here... Aasif Khan · 4 years ago

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