Count the number of lines in the image below ?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

Can you find the dog hidden in a group of pandas?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Solve the rebus riddle in the picture below.

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

How many triangles are there on the puzzle below?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What does this rebus means ?