How can you drop a raw egg from a height onto a concrete floor without cracking it?

Why do we preferably have round manhole covers and not square ones?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

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

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Can you find out the remainder when 3^300 is divided by 5?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?