Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

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?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

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

What happened when the wheel was invented?

Solve the puzzle by telling what does below picture means.