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GATE 2024 MA – Question 31

Algebra · Groups · 1 mark · Numerical answer

How many group homomorphisms ℤ/4ℤ→S₄ exist? (integer)

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Correct answer: 16 to 16

Explanation

A homomorphism is determined by the image σ of the generator, which must satisfy σ⁴=e. Allowed cycle types are identity (1), transpositions (6), double transpositions (3), and 4-cycles (6). Three-cycles are excluded. Total **16**.

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