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4 days ago · We choose \(2\) pairs of pants out of \(4\) for them to wear, so \({4\choose2}2!=12.\) We choose \(2\) pairs of shoes out of \(2\) for them to wear, so \({2\choose2}2!=2.\) Therefore, by the rule of product, the answer is \(20 \times 12 \times 2=480\) ways. \(_\square\)
1 day ago · Hence, the correct answer is choice A, 𝑅 = { ( − 1 8, 1 8), ( − 9, 9), ( 0, 0), ( 9, − 9), ( 1 8, − 1 8) }. It is fairly intuitive that if we can represent a relation using a list of ordered pairs, we can also represent a relation on a coordinate plane. Let’s demonstrate this in our next example.
4 days ago · If this is true for all pairs \( a \) and \( b \) in \( S \), we say that \( S \) is totally ordered. The set \(S\) of people in the world, with \( \le \) defined by "is a direct descendant of," is a partially ordered set. The set \( T \) of positive integers, with \( \le \) defined by "divides," is a partially ordered set.
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4 days ago · 4.1.1 Object Identity and Comparisons 🔗 ℹ. The eq? operator compares two values, returning #t when the values refer to the same object. This form of equality is suitable for
I ordered a pair of white and black sneakers for my wife. White pair constructed in Portugal Black constructed in Mexico Portuguese sneakers feature a more padded, squishy under foot insole and overall finishing of the stitching seems more quality than the Mexican constructed unit.
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