Question

a) |A| when A = {−6, −4, −2, . . ., 96, 98} b) |A| when A = {x ∈ Z: 0 ≤ x ≤ 100 and x is a multiple of 3} c) |A ∩ B| when A = {x ∈ N: x ≤ 100} and B = {x ∈ N: x is prime}.

Answer 1

Answer:

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I don't understand