Today's mentalfloss.com Brain Game Think Thursday challenge asks you to name eight specific presidents, but that shouldn't be as difficult as it sounds. Good luck!

Five pairs of former U.S. presidents
share the same first and last initials.
One such pair is George H.W. Bush and George W. Bush.
Name the other four pairs.

Here are the ANSWERS.

THE ANSWERS:

JOHN ADAMS & JOHN Q. ADAMS
WARREN G. HARDING & WILLIAM H. HARRISON
ANDREW JACKSON & ANDREW JOHNSON
JAMES MADISON & JAMES MONROE

Thanks for playing! Tomorrow, it's Free-for-all Friday.