It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

How many triangles are there in the picture below?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Why is a river so rich ?

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?