Question

1) Is there a no. which has no factor
2) From 1 to 100 how many no. have exactly three factor​

Answer 1

Answer:

1. Since every number has two factors i.e. 1 and itself .Hence there are no counting number having no factor at all.

2. the numbers between 1 and 100 with exactly 3 factors are 4,9,49,25.

Hope it helps.

Answer 2

Answer:

The moment of inertia of an uniform solid cylinder about it's geometrical axis is 8 units. The moment of inertia about the axis tangential to one of plane circular faces, i.e., about diameter of the circular base is (length of cylinder is 3 times it's radius)