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08 Aug 2003, 01:14
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A bag contains six black, seven white and eight green balls. In how many ways can we select from the bag subsets of balls were each subset consists of
a) four black or four white balls;
b) four black and four white balls;
c) four balls of each color;
d) four balls of the same color?
a) four black or four white balls;
b) four black and four white balls;
c) four balls of each color;
d) four balls of the same color?
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08 Aug 2003, 09:29
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Konstantin Lynov
A bag contains six black, seven white and eight green balls. In how many ways can we select from the bag subsets of balls were each subset consists of
a) four black or four white balls;
b) four black and four white balls;
c) four balls of each color;
d) four balls of the same color?
a) four black or four white balls;
b) four black and four white balls;
c) four balls of each color;
d) four balls of the same color?
a) 6C4+7C4
b) 6C4*7C4
c) 6C4*7C4*8C4
d) 6C4+7C4+8C4
