What has a ring but no finger?

In the picture given below, can you find out which digit will take place of the question mark?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

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

What is common among 11, 69, and 88?

A Car is crossing a bridge 2 miles long. The bridge can only hold 10000 lbs, which is the exact weight of the car. The Car makes it half way across the bridge and stops. A bird lands on the car. Does the bridge collapse? Explain.

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

Before Mount Everest was discovered, what was the highest mountain in the world?