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Given,6 white tennis balls and 3 red tennis balls in a close box.
EVENT:drawing 2 balls of the same color.
1:find probability of drawing 2 balls of the same color?
2:find minimum number of draws without replaced to obtain 2 balls of the same color?
Solution
a) 6C2/9C2 + 3C2/9C2 =15/36 +3/36 =1/2

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Given,6 white tennis balls and 3 red tennis balls in a close box. .pdf

  • 1. Given,6 white tennis balls and 3 red tennis balls in a close box. EVENT:drawing 2 balls of the same color. 1:find probability of drawing 2 balls of the same color? 2:find minimum number of draws without replaced to obtain 2 balls of the same color? Solution a) 6C2/9C2 + 3C2/9C2 =15/36 +3/36 =1/2