Is it possible to have a polyhedron with any given number of faces?

Is it possible to add any two vectors ?

The atomic number of helium is 2 and the atomic number of lithium is 3. Is it possible to have an element with atomic number 2.5?

Is it possible to liquefy a gas at any temperature?

Classify the following outcomes as likely, unlikely, possible impossible, even change, or certain. The number on the top face of an ordinary die when rolled will be less than 7.

Is it possible for a body to have inertia but no weight?

Is it possible to have two numbers whose HCF is 20 and LCM is 630? Give reason.

Can a polyhedron have 8 faces, 26 edges and 16 vertices ?

Can a polyhedron have 14 faces, 24 edges and 33 vertices?

Can a polyhedron have 10 faces, 20 edges and 15 vertices?

Can a polyhedron have 10 faces, 20 edges and 15 vertices?