it's popular to circulate math problems on social media. The solutions proposed in the comments are often spectacularly wrong.
We human beings have trouble with infinity. Philosophers and mathematicians have gone mad contemplating its nature and complexity – and yet it is a concept now routinely used by schoolchildren. In this highly entertaining and stimulating history, Brian Clegg takes us on a tour of that borderland between the extremely large and the ultimate, from Archimedes counting the grains of sand that would fill the universe, to the latest theories on the physical reality of the infinite.…
Math problems often circulate on social media as an engagement starter. Here's one of them.