Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

You have to fill the below given grid in a manner that every row and column contains the digits 1 to 6. Also, make sure that the squares that are connected with each other must contains the same digit.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

How many sides does a circle have?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

What kind of tree can you carry in your hand?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?