Question

Where i will give the apostrophe
4. the theory of the Einstein

Answer 1

Explanation:

Apostrophes never form the plural except when you have a single letter like A and want to make it plural without having it look like "as." I got two A's and two ... What they're really for is taking the place of something missing of course: can't. And expressing the ... Einstein's theory; not the Einstein's theory. The problem is that ...