Brain picture Gray's Quicky Brain Teasers and Riddles

I encourage you to send me submissions to the following "collection" of brain teasers and riddles.

A collection of longer teasers is also available.

04/03/2003 What is once in a minute, twice in a moment, but never in a second?
01/27/2003 In the middle of a pool floats a water-lily. Every day, the water-lily doubles in size. After 20 days, the lily covers the entire pool. After how many days was the pool half covered?
08/06/2002 There is a ship floating at anchor at low tide with a ladder over the side. The ladder has 10 rungs, each 1m apart. If at low tide 5 rungs are below the surface of the water, and the water rises at 1.5m per hour, then how many rungs of the ladder will be visable 2 1/2 hours later?
05/08/2002 You are running in a road race with 9 other racers. If you overtake the person who is in last place in the race, what position will you be in?
05/08/2002 You are running in a road race. If you overtake the person who is #2 in the race, what position will you be in?
05/08/2002 Solve the following math problem without pencil and paper or a calculator: Take 1000 and add 40 to it. Now add another 1000. Now add 30. Add another 1000. Now add 20. Now add another 1000. Now add 10. What is the total?
01/03/2002 Some months have 31 days; how many have 30?
01/03/2002 Divide 30 by 1/2 and add 10. What is the answer?
01/03/2002 How many two cent stamps are there in a dozen?
06/21/2001 A frog is at the botton of a well which is almost 10 feet tall and decides to climb out. During the day it climbs 3 feet up the side of the well. During the night when it sleeps, however, it slides down 2 feet. How many days will it take for it to climb out of the well?
06/05/2001 A person you know (call him Joe) is staring at a picture on the wall and says: "Brothers and sisters I have none, but that man's father, is my father's son". Who is the picture of?
? If you have 37 cows standing in a field and all but 16 lie down, how many are left standing?
? How many birthdays does the average male have?
? How many times does the number/digit 7 appear in the whole/integer numbers between 1 and 100?
? How many outs are there in a (North American) baseball inning?
? Here's one of my favorite Christian religious questions. Whose "conception" is described as the "Immaculate Conception"?
? Jed lived alone in a remote house. Since Jed never left his house it was necessary to have his supplies delivered every two weeks. One dark and stormy night, Jed lost control of his senses, turned off all the lights, and went to sleep. The next morning it was discovered that Jed's actions resulted in the deaths of several people. Why?
? There is a cabin in the woods -- the doors are blocked and the windows are closed. Everyone is dead inside but not from exposure, starvation, dehydration, suicide, fire, asphyxiation, or animals. Why?
? Investigators break into an apartment and find the remains of 3 dead bodies on the floor in a pool of water. The only living occupant of the apartment was a cat in the corner. What one word explains the secret to this riddle.
? A bomber takes off from the airport carrying a bomb. The bombay doors open and the pilot presses the release button and everything works fine but the bomb does not leave its cradle. Why?
? Hogan and Snead are professional golfers and long-time rivals. One day during a game, they had each scored 30 when Hogan hit a bad shot. Snead immediately added 10 to his own score. Snead then hit a good shot and won the game. Why?
? A woman pushing her car stopped outside a hotel and immediately went bankrupt. Explain.
? My full brother and I were born in the same hour of the same day of the same year to the same biological mother and have the same biological father, but we are not twins. Why?

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