Back to Archive
#49probability
medium

Number of Double Heads

Source: Placement Test

A coin is tossed 10 times and the output written as a string. What is the expected number of HH? Note that in HHH, number of HH = 2. (eg: expected number of HH in 2 tosses is 0.25, 3 tosses is 0.5)

Discussion

0

You must be logged in to participate in the discussion.

No comments yet. Be the first to start the conversation!