What Time Should the last watch show in the below figure?

What always comes into a house through the keyhole?

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?

What does below rebus means ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

You can hear me, but you can't touch or see me.

What am I?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

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