What has lots of eyes, but can’t see?

What does below rebus means ?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Replace the question mark with the correct number.

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Can you count the number of triangles in the given figure?

If 21x = 79x, what is the value of x?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?