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Find-the-number-of-ways-of-selecting-9-balls-from-6-red-balls-5-white-balls-and-5-blue-balls-if-each-selection-consists-of-3-balls-of-each-colour-




Question Number 32093 by NECx last updated on 19/Mar/18
Find the number of ways of  selecting 9 balls from 6 red balls,  5 white balls and 5 blue balls if  each selection consists of 3 balls  of each colour.
$${Find}\:{the}\:{number}\:{of}\:{ways}\:{of} \\ $$$${selecting}\:\mathrm{9}\:{balls}\:{from}\:\mathrm{6}\:{red}\:{balls}, \\ $$$$\mathrm{5}\:{white}\:{balls}\:{and}\:\mathrm{5}\:{blue}\:{balls}\:{if} \\ $$$${each}\:{selection}\:{consists}\:{of}\:\mathrm{3}\:{balls} \\ $$$${of}\:{each}\:{colour}. \\ $$
Answered by Joel578 last updated on 19/Mar/18
 _6 C_3  . _5 C_3  . _5 C_3
$$\:_{\mathrm{6}} {C}_{\mathrm{3}} \:.\:_{\mathrm{5}} {C}_{\mathrm{3}} \:.\:_{\mathrm{5}} {C}_{\mathrm{3}} \\ $$
Commented by NECx last updated on 20/Mar/18
yeah.Thanks
$${yeah}.{Thanks} \\ $$

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