How many triangles can you find in this given picture?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

A sundial has the fewest moving parts of any timepiece. Which has the most?

81 x 9 = 801. What must you do to make the this equation true?

A bomb exploded in a room full of married couples and no one died. How?

What building has the most stories?

What is the word or phrase below?
R | E | A | D

Identify the 10 differences between the two given pictures.

What is black when you buy it, red when you use it, and gray when you throw it away?