Missing video expectation example 2 consecutive heads

#1

both example videos are same explaining n consecutive heads…please upload specified video

#2

put n=2 for expectation in n consecutive heads.
you will get the answer for two.
video is generalised

#3

I didn’t not get the whole expectation concept…any reference…i wasted almost 3 hr on it…

#4

https://www.topcoder.com/community/competitive-programming/tutorials/understanding-probabilities/

it might help

#5

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