Best short hard riddles

logicmath

Can you arrange four 9's and use of at most 2 math symbols, make the total be 100?
99 / .99 or 99 + 9/9
73.89 %
87 votes
clean

In which place are you silent?
In the building ("u" is silent in pronouncing "building".
73.80 %
50 votes
simplecleanclever

What king can you make if you take: the head of a lamb the middle of a pig the hind of a buffalo and the tail of a dragon?
A lion, king of the jungle! (the head of a Lamb, the middle of a pIg, the hind of a buffalO and the tail of a dragoN)
73.74 %
82 votes
funnytricky

Is an old 50 rupee note worth more than a new one?
Yes of course, 50 rupees are more valuable than 1 rupee.
73.41 %
63 votes