Johnson Garza
09/20/2024 · Elementary School
1. Express following sets using the listing method. a. \( A \) is the set of positive factors of 18 b. \( B \) is the set of positive even numbers below or equal to 30 c. \( C=\{2 n \mid n=0,1,2,3, \ldots\} \) d. \( D=\left\{x \mid x^{2}=9\right\} \) 2. Express following sets using the set-builder method. a. \( \{2,4,6, \ldots \). b. \( \{1,3,5, \ldots, 99\} \) c. \( \{1,4,9, \ldots, 81\} \)
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1. Expressing the sets using the listing method:
a. \( A = \{1, 2, 3, 6, 9, 18\} \)
b. \( B = \{2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30\} \)
c. \( C = \{0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, \ldots\} \)
d. \( D = \{-3, 3\} \)
2. Expressing the sets using the set-builder method:
a. \( \{x \mid x = 2n, \, n \in \mathbb{N}\} \)
b. \( \{x \mid x = 2n - 1, \, n \in \{1, 2, \ldots, 50\}\} \)
c. \( \{x \mid x = n^2, \, n \in \{1, 2, 3, \ldots, 9\}\} \)
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