Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

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 ?

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

What Does this text mean:

important=important

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

The answer I give is yes, but what I mean is no. What was the question?

Can you find the six hidden animals in the picture below?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?