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The set of all second elements is called the:

ARange
BRatio
CRadius
DRegion
Answer & Solution
Correct answer: A. Range
1. The first entries form the domain. 2. The second entries form another named set. 3. The set of all second elements in a relation is called the range. 4. So the answer is the range. _Source: syllabus Mathematics, Ch 2 'Relations and Functions'_
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