What are the Similarities between classical and quantum mechanics?

Answer 1

They both have protons and electrons.

And both the theories agree to the supposition that electrons revolve around the nucleus of the atom. They both state that higher energy electrons are located further from the nucleus.apex approved!!

Answer 2

Quantum mechanics only reproduces classical mechanics in a statistical interpretation, and because the statistical interpretation only gives the probabilities of different classical outcomes, Bohr has argued that classical physics does not emerge from quantum physics in the same way that classical mechanics emerges as an approximation of special relativity at small velocities. He argued that classical physics exists independently of quantum theory and cannot be derived from it. His position is that it is inappropriate to understand the experiences of observers using purely quantum mechanical notions such as wavefunctions because the different states of experience of an observer are defined classically, and do not have a quantum mechanical analog.

Cited from: http://en.wikipedia.org/wiki/Correspondence_principle

Answer 3

what i thought i was finding the answer not answering