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1. |
Define a set. |
Answer» A collection of well-defined objects is called a set. The objects in a set are called its members or elements. We denote sets by capital letters A, B, C, X. Y, Z, etc. If ‘a’ is an element of a set A, we write, a ∈ A, which means that a belongs to A or that a is an element of If ‘a ’ does not belong to A, we write, a ∉ A. |
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