Posted by olivia on Saturday, October 18, 2008 at 8:10pm.
in a high school there are 27 hockey players and 15 soccer players. if 8 persons played both sports, how many different people played in these sports.

math  Damon, Saturday, October 18, 2008 at 8:44pm
Draw a Venn diagram
It overlaps 8 (Intersection of hockey and soccer sets)
27  8 =19 play only hockey
15  8 = 7 play only soccer
8 play both
so there are 19+7+8 players total

math  joyce, Monday, October 20, 2008 at 5:13am
find the 12th term of the harmonic secquence 1/2, 1/6,1/10...

math  ???????, Tuesday, December 2, 2008 at 9:37pm
3
8 × 5
4
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