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.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

What is red and smells like blue paint?

What has one eye, but can’t see?

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

By what process could you make a 'Tea-Table' into food?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?