Mark is going to an awards dinner and wants to dress appropriately. He is running behind schedule and asks his little brother to randomly select an outfit for him. Mark has one blue dress shirt, one white dress shirt, one black dress shirt, one pair of black slacks, one pair of grey slacks, and one red tie. All six of his possible outfits are listed below. Let $A$ be the event that Mark's little brother selects an outfit with black slacks and $B$ be the event that he selects an outfit with a blue shirt. **What is $P(A\text{ or }B)$, the probability that Mark's little brother selects an outfit with black slacks or an outfit with a blue shirt?** [[☃ input-number 1]] |Shirt|Slacks|Tie -|-|- Outfit $1$|Blue|Black|Red Outfit $2$|Blue|Grey|Red Outfit $3$|White|Black|Red Outfit $4$|White|Grey|Red Outfit $5$|Black|Black|Red Outfit $6$|Black|Grey|Red