Use probability to make fair decisions, such as lotteries or random selection.
Decide whether a lottery-style drawing is fair by comparing each participant's probability of being selected
Problem
Is this lottery-style drawing fair? \(\text{One}\) winner is drawn from identical slips, with \(\text{one}\) slip per person.
Big Picture
What this problem is really about
A one-winner drawing can still be fair when every participant has the same chance before the draw. We’ll count the identical slips, map one entry to each person, compute a named person’s favorable-over-total probability, extend that calculation to everyone, and compare the probabilities rather than the outcomes.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.
