Which is faster, Heat or Cold ? Explain.

What has 88 keys?

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?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

What is the word or phrase below?
R | E | A | D

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

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?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?