fran1820 fran1820

08-02-2024
Mathematics

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The coefficients of the (3r)ᵗʰ term and the (r + 2)ᵗʰ term in the expansion (1+ x)²ⁿ are equal, then:
A. n = 2r
B. n = 2r + 1
C. n = 3r
D. none of these

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