You're playing a game where you defend your village from an orc invasion. There are 3 characters (elf, hobbit, or human) and 5 defense tools (magic, sword, shield, slingshot, or umbrella) to pick from.If you randomly choose your character and tool, what is the probability that you won't be a hobbit or use an umbrella?
Q. You're playing a game where you defend your village from an orc invasion. There are 3 characters (elf, hobbit, or human) and 5 defense tools (magic, sword, shield, slingshot, or umbrella) to pick from.If you randomly choose your character and tool, what is the probability that you won't be a hobbit or use an umbrella?
Calculate Total Possible Outcomes: Total number of character choices is 3 and total number of tool choices is 5, so total possible outcomes are 3×5=15.
Determine Unfavorable Outcomes: There is 1 hobbit character and 1 umbrella tool, so the unfavorable outcomes are choosing a hobbit with any tool (1×5=5) and choosing an umbrella with any character (1×3=3). But choosing a hobbit with an umbrella is counted twice, so we subtract that once (5+3−1=7).
Calculate Probability: The probability of not being a hobbit or using an umbrella is the total possible outcomes minus the unfavorable outcomes, divided by the total possible outcomes. So, P(not hobbit or umbrella)=(1515−7)=158.
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