Spot what is wrong here in below Picture?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

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 ?

Who can jump higher than a Mountain?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

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

ST ND RD TH '?'

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

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

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?