What is the fastest way to double your money?

Can you decipher the below rebus?

PBLUESAISNUERSES

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Can you make a fire with just a single stick?

Using eight eights and addition only, can you make 1000?

Can you find out the total number of triangles in the given figure?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?