How many onto (or surjective) functions are there from an n-element (n => 2) set to a 2-element set?

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Mr. Dubey

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📊 Discrete Structure (DS)

Q. How many onto (or surjective) functions are there from an n-element (n => 2) set to a 2-element set?

(A) 2n
(B) 2n - 1
(C) 2n - 2
(D) 2(2n – 2)

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✅ Correct Answer: (C) 2n - 2

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