What month of the year has 28 days?

Can you move 2 matchsticks to form four equal sized squares.

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

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

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?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

What does below Rebus say?

XLR8

Who has married many women but was never married?

Why is the Hole below a Lock?

I add 5 to 9 and get 2. The answer is correct, so what am I?