Keyboard words are not in alphabetical order, Why?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

To attend world science seminar, A famous chemist from Mexico visit
London. In the lab, the scientist was killed and his six assistants were under suspicion of killing the chemist.
Name of six assistants: Austin, Wayne, Dege, Oscaru, Lingard, and Rojo.
He left a note "76-20-44 79-16-22-7"

A local detective Jack was called to solve the case,

After reading the note, Jack instantly asked the police to arrest the murderers.

Who are the murderers?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

Spot 5 differences in two Christmas tree below:

What is the next shape from answers A, B, C, and D figure?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

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

In the picture given below, can you find out which digit will take place of the question mark?