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
?

Here are the ANSWERS.

ANSWERS:

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!