Question

Without calculating, how do you know that the product 2/21 ×3/31
is rational?

a.The product of any two positive numbers is rational.

b. Rational numbers are closed under multiplication, meaning that the product of rational numbers is rational,

c. When multiplying fractions, the product of two fractions is rational so long as both fractions are less than 1.

d.When multiplying fractions, the product of two fractions is rational so long as both fractions are fully
reduced
​

Answer 1

answer maybe C of the given question.

Answer 2

Answer:

b. Rational numbers are closed under multiplication, meaning that the product of rational numbers is rational ,  is the answer

Step-by-step explanation: