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

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

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

What do you see in the image below

What always comes into a house through the keyhole?

One day, all the courtiers from Akbar's court were gathered in the assembly hall when one of them told the Emperor that all his valuables had been stolen by a thief the previous night.
This shocked the Emperor to his core as the place where that courter stayed was the most secured in the kingdom. The Emperor thought that it is not at all possible for an outsider to enter into the courtier's house and steal the valuables. Only another courtier could commit this crime. He quickly called Birbal to identify the thief.
Birbal thought for a while and successfully solved the mystery by identifying the thief in just one statement.
What did Birbal say?

When it is alive we sing, when it is dead we clap our hands. What is it?

What do you think with the below Picture ?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?