How can you take an infinitely large number of objects from an infinitely large group of objects and be left with an infinitely random number of objects. 

Impossible for me to explain on a rational basis although I understand the mathematics behind such a statement.

Likewise with the idea that two somethings can become nothing or vice versa.  I can't explain it on a rational basis but I have confidence in those who say that it can be explained mathematically.

This is why I suggest that if you really are interested in this apparent conundrum that you read one of the many books on the subject.

I've seen suggestions that this was God's work but of course that opens up another conundrum, where did God come from?  Did He appear from nothing?