I have teeth but i don't bite. Who Am I ?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

Which is faster, Heat or Cold ? Explain.

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

I taste better than I can smell. Who am I?

Can you identify the hidden rebus in the image below?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

How many triangles can you count in the figure given?