Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

What is wrong in the below Picture?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

What is the last thing you take off before bed?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.