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Home Questions ECXB7FSPBH
Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Relations and Functions

Question:
A binary operation on the set X is called commutative if
Options:
a*b = b *a ∀ a, b ∊ x
(a*b)*c = a*(b*c) ∀ a , b , c ∊ x
there exist an element e such that a*e = a= e*a ∀ a ∊ x
None of these
Correct Answer:
a*b = b *a ∀ a, b ∊ x

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