700 people are in a group. We'll use F to represent the first initial of their first name, L for the first initial of their last name. Each person is identified with a pair (F, L). At least how many people from this group have the same pairs (F, L) of initials of their first and last names

Kou converged his word document to a powerpoint document. when he received the powerpoint, he was missing material. which most likely explains why the material was missing? a it did not have a proper heading b he incorrectly copied and pasted it c he did not save his document properly d there was not enough space in powerpoint