Determine whether the given definition of ∗ give a binary operation on the given set. If so, check whether ∗ is i) commutative ii) associative? Also, examine ∗ for identity element? a. On Z + , a ∗ b = 2^ab b. On Q, a ∗ b = ?b/2 c. On Z + , a ∗ b =a^b

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