(517) 4

Part of 1996 Tournament Of Towns

Problems(1)

TOT 517 1996 Autumn S O4 n +1 girls and n boys

Source:

For what integers

n > 1

can it happen that in a group of

n +1

n

boys, all the girls know a different number of boys while all the boys know the same number of girls?
(NB Vassiliev)