Sharing problems 11 and 12 from Mosteller’s 50 Challenging Problems in Probability with kids

We’ve taken a break from going through Mosteller’s 50 Challenging Problems in Probability, but are back at it today. Problems 11 and 12 are not calculation problems, but rather are discussion problems.

Honestly, at first I wasn’t sure whether or not to even use them, but the discussion turned out to be pretty interesting.

Here’s the first problem:

And the 2nd problem which is similar:

It would be fun to share either of these problems with a classroom – I’m sure the discussion would be great!