The square root of every positive number less than one is

Question

The square root of every positive number less than one is greater than the number itself.

Every real number besides 0 has a multiplicative inverse.

For every integer x, if x² - 2x + 7 is even, then x is odd.

If x and y are real numbers and x + y is irrational, then x is irrational or y is irrational.

If x and y are real numbers and x + y > 20, then x > 10 or y > 10.