John has a bag of marbles that contains 12 red marbles, 20 green marbles, and 17 blue marbles. what is the probability that he will draw a purple marble? that is, p(purple)? give your answer as a fraction.

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit