It is impossible to hum if your nose is plugged.
366
The glue on Israeli stamps is certified kosher.
67
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
There are more telephones than people in Washington, D.C.
121
American car horns beep in the tone of F.
66
There are 635,013,559,599 possible hands in a game of bridge.
39
In the White House, there are 13,092 knives, forks and spoons!
51