Mathematics for IGCSE & O level - Sets (Section 3 - No. 22)
If A = {1, 2, 3} and B = {3, 4, 5}, then A ∩ B is equal to:
{3}
{1, 2, 3, 4, 5}
{1, 2, 4, 5}
{}
Vysvetlenie
A ∩ B represents the intersection of sets A and B, containing only the common elements.