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Let A be the set of all students of a boy’s school. Then the relation R in A is defined by: is
Let A be the set of all students of a boy’s school. Then the relation R in A is defined by: $R = \{(a,b) : a \text{ is sister of } b\}$ is
- (a)an equivalence relation
- (b)symmetric relation
- (c)an empty relation
- (d)a universal relation
Answer
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From ISC 2022 Specimen Mathematics Paper 1, question 5.