I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
COME SERVED
COME SERVED
COME SERVED

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Which part of London exists in France as well ?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?