Paper tube and folded papers.

Oily paper is

Do oil paper experiments at three different locations and answer the following questions Where do you hang these oil dipped papers?

What is the relation between finger -like structures and paper folds?

For a student the probability of getting a pass in one paper is 75% and the probability of getting a pass in another paper is 60% . The probability for the student to pass in one paper of the two papers) only is

A paper is folded several times. When it was opened it was observed that it contained 22 triangles and 22 quadrilaterals and 12 pentagons. From the above mode is