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 5; and D: the numbers do not add to 11. Express the given event in symbolic form. The red die shows 1, but the numbers do not add to 11. O A'ND AND' O AU D' Ο A D O AND How many elements does it contain? Enter an exact number.

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