If $\dfrac{^nP_4}{^{n-1}P_4} = \dfrac{5}{3}$ then the value of $n$ is (a) 20 (b) 2 (c) 10 (d) 1

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If dfracⁿP₄ⁿ⁻¹P₄ = dfrac53 then the value of n is

Question of 130

\dfrac{^nP_4}{^{n-1}P_4} = \dfrac{5}{3}

(a) 20

(b) 2

(d) 1

Jharkhand JacJAC Intermediate Board (1st Year) 2026MCQ· 1mImportance★★★★★est

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Expressing both permutation terms in factorial form and cancelling common fact …

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