2. Each king in a deck of playing cards represents a great king from history:
U/L; (http://www.snopes.com/history/world/cardking.htm).
3. 111,111,111 x 111,111,111 = 12,345,678,987,654,321
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
etc.
11 x 11 x 11 = 1331
4. ‘I am.’ is the shortest complete sentence in the English language.
So? 
5. Q. What occurs more often in December than any other month?
A. Conception.
A. Christmas! 
6. Q. If you were to spell out numbers, how far would you have to go until you could find the letter a ?
A. One thousand.
Or sometimes “one hundred and one” (depends on how you say your numbers).
“One billion” is the first number that contains a ‘b’.
Any guesses for ‘c’? (Answer at the bottom of the post).
7. Q. What do bullet-proof vests, fire escapes, windshield wipers, and laser printers all have in common.
A. All invented by women.
The laser printer was invented by Gary Starkweather (http://research.microsoft.com/aboutmsr/jobs/garys.aspx).
8. Q. What is the only food that doesn’t spoil?
A. Honey
Sometimes. When kept cool in a sealed container and away from direct sunlight. The same is true of jam and many tinned foods.
9. In Shakespeare’s time, mattresses were secured on bed frames by ropes.
When you pulled on the ropes the mattress tightened, making the bed firmer to sleep on. Hence the phrase ‘goodnight, sleep tight’.
U/L; “Tight” in this case means soundly, or well. The natural rhyme has preserved this archaicism long after it’s other uses have vanished (http://www.askoxford.com/asktheexperts/faq/aboutwordorigins/tight?view=uk).
10. It was the accepted practice in Babylon 4,000 years ago that for a month after the wedding, the bride’s father would supply his son-in-law with all the mead he could drink. Mead is a honey beer and because their calendar was lunar based, this period was called the honey month or what we know today as the honeymoon.
U/L; the term originated in the 16th. century, and cynically refers to that period where love that was “sweet as honey” wanes like the moon (according to the 16th. century diarist Richard Hulot).