Skip to main content
All Questions

A drawer holds N socks, 3 of which are red. You pull out two at random. The probability both are red is 50%. How many socks are in the drawer?

Unlock detailed company stats for this questionUpgrade

Community answers

No answers contributed by the community yet.

Related questions

Three sock drawers hold red and blue, blue and green, and green and red socks, and you do not know which is which. How many socks do you expect to pull out before you are sure?A drawer holds 4 black and 4 white socks. James takes out four socks. What is the probability that he can form two pairs of same-coloured socks?A bag holds 10 red, 10 yellow and 10 blue balls. You draw three balls without replacement. What is the probability that the three balls are all of different colours?

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.