10. Binomial Theorem(11th)

1. The relation \( S = \{(1,1), (2,2), (3,3), (4,4), (5,5)\} \) on \(\{1, 2, 3, 4, 5\}\) is

(a) symmetric only

(b) reflexive only

(c) transitive only

(d) an equivalence relation

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