Probability · Chapter 4 of 10

Expectation

14 curated · 3 from open sources · 17,999 generated

Practice

17,999

Endless problems made on demand, each with an exactly computed answer. Every click is a new one.

#	Title	Difficulty	Source	Tags
183	The average roll	Easy	Lemma	Expected value
184	Waiting for a six	Easy	Lemma	Geometric distributionFirst-step analysis
437	Expected sum of two dice	Easy	Lemma	Expectation
438	Expected heads	Easy	Lemma	Expectation
439	Is it a fair game?	Easy	Lemma	Expectation
444	Mean of a uniform variable	Easy	Lemma	Expectation
185	See every face	Medium	Lemma	Coupon collectorLinearity of expectation
186	The hat-check problem	Medium	Lemma	Indicator variablesLinearity of expectation
440	Variance of a die	Medium	Lemma	Expectation
441	Waiting for two heads in a row	Medium	Lemma	Expectation
442	The larger of two dice	Medium	Lemma	Expectation
443	Expected shared birthdays	Medium	Lemma	Expectation
1819	A Ticket Holder's Expectation	Medium	Hall & Knight	ExpectationConditional Probability+1
1820	Betting on Horse Races	Deep	Hall & Knight	ExpectationOdds+1

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