Question

which of the following is not true ?a) rational numbers are closed under addition b) rational numbers are closed under substraction c) rational numbers are closed under multiplication d) rational numbers are closed under division​

Answer 1

Answer:

rational number are closed to addition, subtraction and multiplication

Answer 2

Answer:

rational numbers are closed under division

Step-by-step explanation:

because if you divide a number by 0 which does not come under rational number