this is a question justina asked me. quite funky. do without a paper and pen, just ur brains and if u wish, ur fingers. lol
there are 10 people in a room. the first person knows 1 person, 2nd person knows 2 people, 3rd person knows 3...9th person knows 9 people. how many people does that 10th person know? to say that first person knows the second person is to say that the second person knows the first person. its like a handshaking question. if 1 shakes hand with 2 then 2 shakes hand with 1. yeps.
the 10th person knows 5 people =)
