Answer:
3/4
Step-by-step explanation:
1. Since we know there are 13 diamonds in the card deck containing 52 cards, we first subtract 13 from 52.
2. Now, because there's still 52 cards in total but only 39 are not diamonds, the probability of not getting a diamond card is 39/52. However, 39/52 have a common factor of 13. 39/13 = 3, and 52/13 = 4. Therefore, the simplified probability is 3/4.
