If you know the English alphabet and can visualize a bit (or stand on your head), you can solve today's mentalfloss.com Brain Game Free-for-all Friday challenge. Give it a shot:
Which capital letters of the English alphabet
look identical when viewed upside-down
(turned 180 degrees) in a mirror?
B, C, D, E, H, I, K, O, and X.
NOTE: B, E, H, K, and X may not look identical in some fancier typestyles, but will in most basic sets.
Thanks for playing, and have a great weekend!