What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Replace the question mark in the picture below.

If an electric train is travelling south, then which way is the smoke going?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

What's the only room from which no one can enter or leave

What does this simple rebus mean?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Who can jump higher than a Mountain?