Can you solve the below algebraic mathematical equation?

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

Complete the given grid with valid words. You can only use the letters AAEEIIMMPPTT.

Hint: The grid reads the same across as down.

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

John was drowned by he was not wet. How?

Next Number in the Series,

5, 16, 49, 104, ?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Can you decipher the two rows to find the hidden word?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?