the rose bush challenge: a gardener sells 10 different varietie of rose bush. a
gardener wishes to buy 6 rose* *bushes, all of different varieties.
i) calculate the number of ways she can make her selection.
this is the tough hard part:
Of the 10 varieties, 3 are pink, 5 are red and 2 are yellow. Calculate the number of ways in which her selection of 6 rose bushes could contain:
i) no pink rose bush
ii) at least one rose bush of each color
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