Here it is in case you didn't receive it the first time.
On a regular basis, each of you will receive a specially designed problem to get you thinking. For those of you who submit a correct answer, you will be eligible for discounts
on my collection of ebooks, as well as recognition on my website. So good luck, and here's to problem solving. Remember, you must work your brain in order that it get stronger.
Scientific research done at Stanford University has shown that regular mental exercise, such as that performed in doing brain teasers, riddles, and the like, improves cognitive functioning and brain health. Come work out your brain with these fascinating problems and brain teasers. For the solution, join my free newsletter by clicking here Newsletter Tab. Then email me to let me know. Once I receive confirmation that you have joined my newsletter, I will send you the link to the solutions page.
So here goes for this week: Why are manhole covers round as opposed to some other shape? Hint: Think of what could possibly happen if these covers were not in this shape.
