What kind of band never plays music?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

What does the below image rebus riddle means ?

It belongs to you, but other people use it more than you do. What is it?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

What goes up but never comes down?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?