Find the number of dynes in one Newton.

Find the number of nodes in 3d.

One gram atom of an element contains 6.023xx10^23 atoms. Find the number of atoms in 8 g oxygen.

Find the number of all one-one functions from set A={1,2,3} to itself.

Find the number of triangles formed in a decagon

Find the number of diagonals formed in a decagon

Atomic number of an atom Z=17, Mass Number A= 35. Find the number of protons, electrons and neutrons in the atom.

One gram mole of a substance contains 6.022xx10^23 molecules. Find out the number of molecules in 2.8 g of nitrogen.

One mole of an element contains 6.022xx10^23 atoms. find the number of oxygen atoms in 4 g of O_2 .