Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

You need to move three matchsticks to form three squares. Can you do it?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

1 dollar = 100 cent
= 10 cent x 10 cent
= 1/10 dollar x 1/10 dollar
= 1/100 dollar
= 1 cent

=> 1 dollar = 1 cent

solve this tricky problem?

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?

Find the next number in the series below

21 32 54 87 131 ?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?