Lemma
DeepParadoxes
Lemma practice generator birthday-problem #7,032 · Probability · Paradoxes

The birthday problem

5 people each pick one of 262 equally likely numbers at random. What is the probability that all their numbers are different?

~7 minAnswer checked instantly
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.