Can you solve the below algebraic mathematical equation?

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

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Can you write down eight eights so that they add up to one thousand?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

I taste better than I can smell. Who am I?

How many words can a pen with half refill write?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

What's the only room from which no one can enter or leave

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1