Can you solve the maths in the below-given picture equation?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

Can you count the number of matches in the picture below ?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

A horse was tied to a rope 5 meters long and the horses food was 15 meters away from the horse. How did the horse reach the food?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?