@thatrogeryates @engineers_feed Essentially itโs because youโre looking at the comparisons between birthdays not the individual birthdays themselves
@thatrogeryates @engineers_feed From wikipedia: โthe birthday comparisons will be made between every possible pair of individuals. With 23 individuals, there are โ
(23 ร 22)โ /2 = 253 pairs to consider, far more than half the number of days in a year.