Mathematics · Set Theory
Which of the following mathematical sets is countable?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The set of all polynomials with rational coefficients✓
- 2The set of all polynomials with real coefficients having rational roots
- 3The set of all 2 × 2 real matrices with rational eigenvalues
- 4The set of all real matrices whose row echelon form has rational entries
Correct answer
The set of all polynomials with rational coefficients
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