It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I have branches, but no fruit, trunk or leaves. What am I?

Through your logical capabilities, can you make 7 an even?

When is the top of a mountain similar to a savings account?

Bay of Bengal is in which state?

What does a man do only once in his lifetime, but women do once a year after they are 29?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

Imagine you are in a room with no windows or doors. How will you get out?