I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What word is represented by this rebus?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Which alphabet is a part of our body?

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

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?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

They are three errirs in this question. Can you find them?

How many letters are in the alphabet?

Solve below popular number sequence
314 159 265 358 979 323 846 ?