NDA 2026 Mathematics question
Consider the following relations from to , where and : I. II. III. IV. Which of the above is/are function(s) from to ?
Answer: (B)
Solution
A relation from to is a function if every element of has exactly one image in . I: 3 has two images (2 and 6), not a function. II: 3 has two images (4 and 2),
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