It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

How many triangles are there on the puzzle below?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

Why do people go to bed?

I make two people out of one. What am I?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?