What does this rebus puzzle means ?

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

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

How many triangles can you find in this given picture?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?