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Artian:
Let R and S be two finite sets such that the 𝑛(𝑅) = 40, 𝑛(𝑆) = 68 and 𝑛(𝑅 ∪ 𝑆) = 80. Find 𝑛(𝑅 ∩ 𝑆).
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jhonyy9:
so you know what mean 𝑛(𝑅 ∪ 𝑆) = 80.? and what mean 𝑛(𝑅 ∩ 𝑆). ?
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