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?

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

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

If 1+9+8=1, what is 2+8+9?

Count the number of lines in the image below ?

Replace the question mark with the correct number below.

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?

Can you name some countries which do not have the alphabet 'A' in them?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?