John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?
It is always ahead of me yet I can never see it. What is it?
Which wheel of car does not rotate when you turn your car right?
I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.
why?
Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair
What Adam and Eve do not have but the rest of the people have?
Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?
If eleven plus two equals one, what does nine plus five equal?
Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.
How many miles does the pigeon travel?
What brings you down but never up?
You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?
DONALD
+GERALD
=ROBERT
In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.
