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Question Number 18760 by 786786AM last updated on 29/Jul/17

$$\mathrm{If}\mathrm{the}\mathrm{coefficient}\mathrm{of}{x}^7\mathrm{and}{x}^8\mathrm{in}{(2+\frac{x}{3})}^n$$$$\mathrm{are}\mathrm{equal}\mathrm{then}r\mathrm{is}\mathrm{equal}\mathrm{to}$$

Commented by Tinkutara last updated on 29/Jul/17

$$\mathrm{There}\mathrm{is}\mathrm{an}\mathrm{error}\mathrm{in}\mathrm{the}\mathrm{question}.r\mathrm{comes}$$$$\mathrm{out}\mathrm{to}\mathrm{be}\mathrm{fractional}.$$

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