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

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What does this mean?

CCCCCCC

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

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?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

What is red and smells like blue paint?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

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

Different lights make me strange by changing me into different sizes. What am I?