Skip to content

roadmap problems guides patterns quiz mock math progress

~/math / Linearity of expectation

How many faces show up

medium

You roll a fair die 6 times. What is the expected number of distinct faces that appear?

Next puzzle →

$ algos.sh · built with an AI assistant, every solution tested · no ads, no third-party trackers · about · privacy · terms

Code on every page is compiled and tested in Python, C++ and Java.

esc