5 white balls and 5 blue balls if each selection consists of 3 balls of each colour.

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5. 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.
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Oct
5. 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. 5 white balls and 5 blue balls if each selection consists of 3 balls of each colour. 5. Find the number of ways of [...]
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