Răspuns :
A={x/x∈N, x<10}
x<10 => x∈(-∞,10)
A={-∞...,2,4,6,8,}
B={x/x∈N, 2≤x<6}
2≤x<6 => x∈ [2,6)
B={2,3,4,5}
x<10 => x∈(-∞,10)
A={-∞...,2,4,6,8,}
B={x/x∈N, 2≤x<6}
2≤x<6 => x∈ [2,6)
B={2,3,4,5}