Who can jump higher than a Mountain?

Why do you find that most of the buildings are deprived of the 13th floor?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Why are all black people so quick ?

How can a man go eight days without sleep?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

A man dies of old age on his 25 birthday. How is this possible?

What has 88 keys?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?