Question:সরল কর : `(7^3 xx 7^-3)/(3 xx 3^-4)` 

Answer সমাধান : `(7^3 xx 7^-3)/(3 xx 3^-4)` `= 7^(3 - 3)/ 3^(1 - 3)` `= 7^0/3^-3` `= 1/3^-3` `= 1 xx 3^3` `= 27` (Ans.) 

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shorol kar : `(7^3 xx 7^-3)/(3 xx 3^-4)`
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