<PRE><B>Question 561102</B>
a box containing 6 red balls and 4 green balls. how many ways can 2 balls be drawn at the time if
a. the balls are of any color?::: 10C2 = 45
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b. in the balls are of the same color?::6C2+4C2 = 15+6 = 21
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c. if the two balls are different color?::45-21 = 24
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Cheers,
Stan H.
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