A tuple is an ordered collection of things. Two tuples are equal if they contain the same things, in the same order. For instance, the tuple (1, 2, 3) is equal to the tuple (1, 2, 3) but not equal to the tuple (1, 3, 2). Tuples can contain repeated elements. For instance, the tuple (1, 2, 2) is not equal to the tuple (1, 2), nor to the tuple (2, 2, 1). An n-tuple, where n is an integer, is a tuple with n positions. For example, (1, 2) is a 2-tuple (aka ordered pair) and (7, 3, 2, 2, 2, 1) is a 6-tuple.