Eight of us go fourth, not back, to protect our king from an attack. What are we?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

Find out the missing number in the picture attached:

My location can be determined by the below rebus.
So where am i ?

Solve below rebus puzzle?

What always comes into a house through the keyhole?

Forwards I am heavy, backward I am not. What am I?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?