Math, asked by TondeGameing, 5 hours ago

(2/5)^n×(2/5)^-3=(2/5)^7

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Answered by ritkadevi

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Answered by XxKingAdityaxX

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2n−7×5n−4=1250

2n−7×5n−7×53=1250

⇒(2×5)n−7=1251250

⇒10n−7=101

⇒n−7=1

⇒n=7+1=8

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