Can you solve the below algebraic mathematical equation?

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

John was drowned by he was not wet. How?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

What can go through glass without breaking it?

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

How many triangles are there in the picture below?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

Which alphabet is a part of our body?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?