Puzzles , riddles , andbrainteasersabound online , and we ’ve passed along several , including thisentrance exam math problemfrom MIT circa 1876 and a bafflingfamily tree riddlethat ’s throw most who test it .

Another entrance in the most - citizenry - won’t - solve - it genre : A late puzzle courtesy ofMindYourDecisons.comthat the site arrogate stumps 80 percent of player . ( A similar head lay byThe Guardianin 2016resultedin a 72 percent miss charge per unit among 200,000 respondent . )

Here ’s the query :

See if you can vow to solve this tricky logic puzzle.

Alice is look at Bob , and Bob is look at Charlie . Alice is married , Charlie is not .

Is a marital person looking at an single person ?

A. Yes

the word ‘answer’ in a blue text bubble

B. No

C. Can not Be Determined

The answer look below .

The answer is A. A matrimonial person is calculate at an single person because our protagonist Bob ’s married status work either way . If Bob is splice , and we have a go at it he ’s look at the unmarried Charlie , the statement holds true . If Bob is single , and the married Alice is looking at him , the statement still stands .

Here ’s another one courtesy of the same site :

You have a drawer with 10 black socks and 10 white socks . You close your eye and pull out three drogue . Are you carry a matching duad of windsock ?

The answer is A. ( Yes ) because only two opening exist . If you take two windsock from the drawer , either the yoke will be matched or you ’ll have one black and one white sock . Taking a third air sock will be black or blank , meaning it will pair up with one of the first two .

If you ’re now intrigued by sock mysteries , check out the rationality whywashing machinesappear to eat your footgear .

[ h / tMind Your determination ]