What kind of band never plays music?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

When does a USA Potato change its nationality?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?