Exact question: There are 12 people at a dinner party. If everyone says "good evening" to everyone else, how many "good evenings"were said?
2007-02-15 09:03:07 · 25 answers · asked by huhwhatcaca 2 in Education & Reference ➔ Homework Help
144.
good one, I got it wrong.
if I wasn't talking to myself 132?
2007-02-15 09:06:56 · answer #1 · answered by mean evil woman 7 · 0⤊ 0⤋
1 person says good evening to 11 others(1+11=12) [he'll not say good evening to himself]
so 12 people say good evening to 12*11=132 people
therefore 132 good evenings were said
2007-02-15 18:57:56 · answer #2 · answered by palash6492 3 · 0⤊ 0⤋
132
2007-02-15 09:10:46 · answer #3 · answered by Cathy B. 2 · 0⤊ 0⤋
132
each person said good evening to 11 other people (you + 11 = 12 total) As you will not say good evening to yourself :p
11 X 12 = 132
2007-02-15 09:09:06 · answer #4 · answered by starlightblue311 2 · 0⤊ 0⤋
144
2007-02-15 09:05:43 · answer #5 · answered by margarita 7 · 0⤊ 0⤋
Good question.
It seems the answer is n(n-1) = 12 * 11 - 132. I think.
2007-02-15 09:14:31 · answer #6 · answered by JiveSly 4 · 0⤊ 0⤋
144
2007-02-15 09:06:55 · answer #7 · answered by peersignal 3 · 0⤊ 1⤋
144
2007-02-15 09:05:55 · answer #8 · answered by Groovy 6 · 0⤊ 1⤋
144
2007-02-15 09:05:55 · answer #9 · answered by Smart Nurse 5 · 0⤊ 1⤋
144
2007-02-15 09:05:40 · answer #10 · answered by david UK 4 · 0⤊ 1⤋