Skip to main content
All Questions

How many times must you flip a fair coin to have at least a 50% chance of having seen two consecutive heads?

Unlock detailed company stats for this questionUpgrade

Community answers

No answers contributed by the community yet.

Related questions

I flip a fair coin 5 times and you flip 4 times. What is the probability you get at least as many heads as I do?You flip a fair coin until you see heads. How many flips do you expect to need?How many fair coins must you toss for the probability of exactly two heads to equal 50%?

Related courses

Course

SQL Interview Prep Course

Prepare for SQL interviews with lessons on joins, aggregations, and window functions, then practice real SQL interview questions in an interactive editor with expert solutions.

Course

Data Science Interview Prep

Land your dream data science role at Google, Amazon, Microsoft, Meta, Apple, and other top companies. Learn from mock interviews, frameworks, and advice from senior candidates. Practice statistics, experimentation, coding, SQL, machine learning, behavioral interviews, and more.