Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?
There are forty elephants and they have forty-fore heads. How can this be possible?
Find the hidden panda in the image below.
There are six people in a family namely M, N, O, P, Q and R. R and O are brother and sister. N is the brother of Q's husband. P is the father of M and grandfather of R. How many male members are in the family?
What goes up but never comes down?
What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
Do You See It?
There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?
If 21x = 79x, what is the value of x?
John can place six large boxes or nine small boxes into a carton. Can you find out in how many cartons can he place sixty-six boxes in total?
There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across. How?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki
