Lemma
MediumCounting & chance
OpenStax, Algebra and Trigonometry 2e §13.7 Probability · Exercise 21 · Probability · Counting & chance

Probability · Exercise 21

Four coins are tossed.

Find the probability of tossing exactly two heads.

~8 minAnswer checked instantly

OpenStax, Algebra and Trigonometry 2e · §13.7 Probability · Exercise 21

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your answer
Loading the math keyboard…

Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.

Checked against the answer in OpenStax, Algebra and Trigonometry 2e.