9. Which statement is true?

10. Which statement is false?

19. Which set of numbers is closed under subtraction?

20. Which of the following sets is NOT closed under addition?

9 Which statement is true 10 Which statement is false 19 Which set of numbers is closed under subtraction 20 Which of the following sets is NOT closed under add class=

Respuesta :

1. A
2. A
3. D
4 B

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