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February 28, 2015

February 28, 2015

Posted by **John :)** on Wednesday, April 18, 2012 at 7:51pm.

- 7th Grade Math -
**John :)**, Wednesday, April 18, 2012 at 7:57pmI know the answer is 10, but the problem is I can't find out the formula :/ if I only show the answer I won't get any credit and it'll be marked wrong.

- 7th Grade Math -
**Glendale, CA**, Friday, April 20, 2012 at 12:00am5 per group.

person x = 1st person meeting everyone

x - 1, x - 2, x - 3, x-4 (no x - 5 because he/she is 5th person).

Meeting count:4

second person meeting everyone = y

y - 1, y -2, y - 3,

(no y -4 or y - 5 because he/she already met with person x and cannot meet with himself)

Meeting count: 7

third person meeting everyone = z

z - 1, z - 2

z has already met with y, z has already met with x, z cannot meet him/herself.

Meeting count: 9

fourth person meeting everyone = k

k -1

k has already met with x,y, and z. k cannot meet with himself

Meeting count:10

everyone has met with each other

- 7th Grade Math -
**Anonymous**, Thursday, August 2, 2012 at 5:45pmyfjvgfjfjfgjgfjf53df

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