Hypatia1
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There are 10 different chocolates and you want to buy three of them. However, you cannot pick a pair of chocolate more than once. How many different choice you can make??
And what about this phrase? Can I buy, say, 7 chocolates of 3 different types or does it have to be 3 individual chocolates?Hypatia said:you want to buy three of them
This is also unclear. If I pick a pair twice, I have 4 chocolates. Why is this a restriction if I need to buy just 3? Or, if I have to buy any number of chocolates of 3 different types, can I buy 3 chocolates of type 1? I have 1 pair and another single chocolate, so no pair is picked twice.Hypatia said:you cannot pick a pair of chocolate more than once.