Fun Fact! A cake may be sliced into 8 equal pieces with only three slices.
Various people have told me that this has been used as an interview question by many firms to assess "out-of-the-box thinking." The "secret" here is to think of a cake as a three-dimensional cylinder rather than a two-dimensional circle, as most people do. This enables us to not only perform vertical cuts, but also horizontal cuts. So, if you use two of your cuts to make a cross on the top of the cake, effectively dividing it into four equal parts, and your third cut as a horizontal cut across the centre of the cake, thereby dividing each of the four equal portions in half, you'll have eight equal pieces.
Fun Fact! There is just one number that is spelled with the same number of letters as the number itself.