Prolific puzzle inventor Henry Ernest Dudeney published the following problem in his 1917 book Amusements in Mathematics.The current version of the U.K.’s Union Jack flag was introduced in 1801. This ...
Daily Mail on MSN
Simple-looking math test question leaves people baffled - can you solve it in 30 seconds?
Get out your timer and number two pencil to see if your arithmetic skills from grade school are still intact.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results