On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

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?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

why number 8549176320 is one of a kind?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Two Twins Jack and Jill were standing back to back and suddenly they started running in opposite direction for 4 kilometres and then turn to left and run for another 3 kilometres.

what is the distance between the Baggio twins when they stop ?

If 21x = 79x, what is the value of x?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

If eleven plus two equals one, what does nine plus five equal?

What is the centre of gravity?