I have eight fingers and two thumbs but I do not live. What Am I?

Solve the mathematical equation in the picture below.

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

What do you see in the given picture?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

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

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

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

What four weights can be used to balance from 1 to 30 pounds?