Suppose two dice (one red, one green) are rolled. Consider the following events. A: the red die shows 1; B: the numbers add to 4; C: at least one of the numbers is 1; and D: the numbers do not add to...

just need the second part

Extracted text: Suppose two dice (one red, one green) are rolled. Consider the following events. A: the red die shows 1; B: the numbers add to 4; C: at least one of the numbers is 1; and D: the numbers do not add to 9. Express the given event in symbols. HINT [See Example 5.] The numbers do not add up to 4, but they do add up to 9. Bn D O B'n D' B'n D OBUD' B'UD How many elements does : contain? Enter an exact number.