What number should come in place of the question mark below?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

How can a man go eight days without sleep?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

I cannot talk, but I always reply when spoken to. What am I?

Where do you go to learn how to make ice cream?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.