By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

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?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

Can you find the 09 errors in the picture below?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?