Sandy purchased 3 pairs of shorts, 5 shirts, and 2 pairs of sandals. which of the following expressions represents the number of different outfits consisting of 1 pair of shorts, 1 shirt, and 1 pair of sandals? . c(10, 3). p(10, 3). 3·5·2

These are combinations, you can't just treat it as numbers and you can't change the order you wear it I mean you can't use shorts for your feet for example.

The best and most correct answer among the choices provided by your question is the first choice which is C(10, 3). The probability would be 3*5*2 which is equal to 30.
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Where’s the problems ? ?

The answer would be 27 because assuming that each package has 1 bar of soap and 1 tube of toothpaste, after 27 packages they would run out of toothpaste