If n P 4-12n P 2 the find n-

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Arithmetic Mean

If n P 4=12n ...

Question

If ⁿP₄ = 12 ⁿP₂ the find n.

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If ⁿP₄ = 12 ⁿP₂ the find n.

^{n} P_{4} = 20^{n} P_{2}

n

^{n} p_{4} = 20 \times^{n} p_{2}

nP4=20(nP2) then find the value of n

n

^{n - 1} P_{3} :^{n} P_{4} = 1 : 9.

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