Can you make four (4) nines (9) equal 100?

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 rain drop fell from one leaf to another leaf and lost 1/4th of its volume. It then fell to another leaf and lost 1/5th of the volume. It again fell on another leaf and lost 1/5th of the volume.



This process kept repeating till it fell on the last leaf losing 1/75th of its volume.



Can you calculate the total percentage of loss from the initial volume when the drop has fallen to the last leaf accurate up to two decimal places?

What has many teeth, but cannot bite?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

Find the Goldfish below the given Image.

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Can you count the number of squares in the given picture?