An ordinary, fair, six-sided dice is rolled 420 times. How many times is the number 3 expected?
Answer 70
This one is surprisingly straightforward. A standard six-sided dice will land on three 1/6th of the time it's rolled. 1/6th of 420 is 70. Voila!
Asked by Ben Jenkins · Last updated 3 years ago · 2.2K views · SOURCE