True or false 1) There is no number that exists in both and .

2) for all n elements of even integer numbers, there exists m element of integer numbers such that n = 2 m.

3) Regular Expressions can only be used to search over text containing letters and digits, not special characters such as +, *, space, or period.

4)There is a single unifying standard for Regular Expression syntax.

5)By the Pigeonhole principle, a function from a finite domain to a smaller finite codomain cannot be one-to-one.