Riddles and Puzzles

Meant to "warm up your critical-thinking"  skills!    Everyone of these is a trick, except one.

Email me the answer(s) for 10 points each  (10riddles).   Describe the "trick", or the logical

fallacy or answer the question.

 1.  You find a coin marked "44 BC"  -- Could it be authentic? 
 2.  A solicitor comes to your door requesting a donation for the "Widow of the Unknown Soldier" -- Comment?
 3. Your assistant measures the temperature in the freezer at -40 but does not say whether it is Fahrenheit or Centrigrade.    Comment.
4. If the number of the Golden State Freeway is 5, what is the number of the 405 Freeway?
5. If a plane containing US and Canadian passengers crashes right on the US - Canadian border,  where should the survivors be buried?
6. A weather report from the Everglades reports 100 degrees with 110% humidity -- Comment.
7. If stamps are 12 cents per dozen,  how many can you buy for $1.00?
8.  Finish this line:  "When renting an apartment, make sure everything works, especially the ________!"  (you are the manager)
9.  Finish this line:   Don't Emphasize the Trivial nor _______   the ________!
10.  Finish the line:   If you treat education cheaply,  you will get a ______ education!
11.  "I have 2 coins in my hand that total 55 cents.  One is not a nickle.  What is the value (denomination) of the coins?"
12.  Faster in level flight:   What is the engine that made the Spitfire outperform the Focke Wulf 190?
13.  Faster in a dive:    WWII  Corsair or  Zero?
14.  Faster:    Viking Warship or Roman 3-tiered Galley?
15.  What would happen if you put an electrical charge on the leading edge of an aircraft wing?  Besides shocking whatever it hit?
16.  How do you know that Santa Barbara is further west than Reno, Nevada?
17.  What comes out of the tailpipe of a car burning hydrogen?
18.   What chemical does the immune system produce?
19.   How does its bark protect a tree?
20.   What color would the bear be if every direction he faced was South?
21.   Comment:   "The theories of Sigmund Freud are insane!   He must have had a very troubled childhood!"