7 Up can still be found in several Southeast Asian countries such as Singapore. 7 Up Free: 7 Up Free is sold in Iceland, UK, Ireland, Spain, Norway, Argentina, Finland, UAE, Uruguay, Pakistan, and the Netherlands. It contains no caffeine, sugar, colorings, or preservatives, and is marketed as "Natural Lemon and Lime Flavour" similar to the "100% natural" American version. It contains a combination of artificial sugars, and for eight years was the only variety on the Norwegian market. The lack of the usual light or zero-label is confusing to Norwegian consumers, who often buy it not knowing they are buying a
Combination can be written using factorials as formula_2 whenever formula_3, and which is zero when formula_4. The set of all "k"-combinations of a set "S" is often denoted by formula_5. Combinations refer to the combination of "n" things taken "k" at a time without repetition. To refer to combinations in which repetition is allowed, the terms "k"-selection, "k"-multiset, or "k"-combination with repetition are often used. If, in the above example, it were possible to have two of any one kind of fruit there would be 3 more 2-selections: one with two apples, one with two oranges, and one with two pears.