Question

Scrieti elementele multimilor:
A = { x ∈ N | 3x ≤ 9 } = .......
B = { x ∈ Z | |x| = 5 } = ......
C = { x ∈ Z | |x| ≤ 2 } = .......

Answer 1

A={0,1,2,3}
B={-5, 5}
c={-2,-1,0,1,2}