What is so fragile that saying its name breaks it?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

Can you find the missing piece of the Porsche?

How could a baby fall out of a twenty-story building onto the ground and live?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

During which month do people sleep the least?

The cream is heavier than Milk. True or False?