If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Find out the missing number in the picture attached:

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?