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M={x|x€N,x=2n-5,n€N,n mai mic sau egal decât 30

Răspuns :

Andytgak

M = {x | x ∈ ℕ, x = 2n-5, n ≤ 30}

n ∈ {3, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}

M = {1, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57}

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