What building has the most stories?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

During which month do people sleep the least?

In The Image Below Which clock is the odd one out?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Replace the question mark with the correct number.

Can you make four (4) nines (9) equal 100?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?