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?

The owner of a popular clothing store comes up with his own method of pricing items. A vest costs $8, socks cost $10, a tie costs $6, and a blouse costs $12. Using the owner’s method, how much would a pair of underwear cost?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

You can see three almost identical images below. Can you spot the odd one out from them?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Can you write down eight eights so that they add up to one thousand?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Can you start the fire using two pieces of wood?

Trying to tease Birbal, Akbar gave him one gold coin and ask him to buy
* something for him to eat
* something for him to drink.
* something to feed the cows
* something to plant in the garden
and most important you need to buy only one thing.

What must Birbal buy to silence Akbar?