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8 February, 21:27

There are 13 kinds of shampoo and 9 kinds of conditioner for sale in a drugstore. How many ways can one shampoo and one conditioner be selected

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Answers (2)
  1. 8 February, 22:16
    0
    There are 117 ways in which one shampoo and one conditioner can be selected

    Step-by-step explanation:

    We have

    13 kinds of shampoo

    9 kinds of conditioner

    How many ways can one shampoo and one conditioner be selected

    Basically, for each kind of shampoo, there are 9 kinds of conditioner. There are 13 kinds of shampoo

    13*9 = 117

    There are 117 ways in which one shampoo and one conditioner can be selected
  2. 8 February, 23:44
    0
    13-9=4

    there is four ways
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