Skip to main content
All Questions

A fair coin is flipped 100 times out of sight. You may ask one yes/no question, then guess every flip, winning $1 per correct guess and losing $1 per wrong one. What do you ask, and what do you expect to make?

Unlock detailed company stats for this questionUpgrade

Community answers

No answers contributed by the community yet.

Related questions

I flip 100 fair coins and you must guess the whole sequence. You may first ask one yes/no question. What do you ask to maximise your chance of guessing correctly?You flip four fair coins and win $1 per head, and may re-flip a single coin of your choice. Playing rationally, what is your expected profit?You start with $1 and a friend with $N, flipping a fair coin for the shorter stack each round. You rebuy for $1 when broke, and the game ends when your friend is broke. What do you expect to make?

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.