What's the next in the series?

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

Which is faster, Heat or Cold ? Explain.

When it's bad luck to meet a black cat?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

Can you solve below mathematical equation?

2^1234 - 2^1233

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

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?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude?