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Chemistry 7 Online
OpenStudy (anonymous):

Describe and correct the error in finding the number of combinations.

OpenStudy (twinkles):

A combination on the other hand is a group of items whose order is not important. For example, suppose you go to lunch with a friend. You choose milk, soup, and a salad. Your friend chooses soup, a salad, and milk. The order in which the items are chosen does not matter. You both have same meal.

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