Can you find out the remainder when 3^300 is divided by 5?

How can one talk without saying a single word?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What number when divided in half becomes zero?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Which Travels Faster? Solve below famous picture riddle:

What does this rebus puzzle means ?