Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

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?

Who are the happiest people in IPL match?

Why are all black people so quick ?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

Rearrange the letters in "new door" to make one word.

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Teacher ask the student

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

what did student replied ?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?