Suppose two dice (one red, one green) are rolled. Consider the following events. A: the red die shows 1; B: the numbers add to 5; C: at least one of the numbers is 2; and D: the numbers do not add to

Suppose two dice (one red, one green) are rolled. Consider the following events. A: the red die shows 1; B: the numbers add to 5; C: at least one of the numbers is 2; and D: the numbers do not add to 11. Express the given event in symbolic form.

Either the numbers add to 11 or the red die shows a 1.

How many elements does it contain?