Question

Scrieti prin enumerare elementele multimii B = {n ∈ N | 3 < 2n +1 ≤ 33 }

Answer 1

3 < 2n+1 ≤ 33
3-1 ≤ 2n < 33-1
2 ≤ 2n < 32
2÷2 ≤ n < 32÷2
1 ≤ n <16
B = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}