What does an Island and the letter T have in common?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

What jumps when it walks and sits when it stands?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Next Number in the Series,

5, 16, 49, 104, ?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?