What is wrong in the below Picture?

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?

Spot 5 differences in two Christmas tree below:

Can you count the number of children in the picture below

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Using exactly three matchsticks, can you divide the area into two equal parts?

What does a man do only once in his lifetime, but women do once a year after they are 29?

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?