Can you spot the hidden girl in the picture below?

What number when divided in half becomes zero?

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

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?

Different lights make me strange by changing me into different sizes. What am I?

You can see it everyday, But cannot touch it at will. What is it?

What can go through glass without breaking it?

What runs around the whole yard without moving?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

One night, a man runs away from home. He turns left and keeps running. After some time he turns left again and keeps running. Later, he turns left one more time and runs back home—but when he gets home, he finds a man in a mask. Who was the man in the mask?