1.

Simplify:-(7⁰ ÷ 3⁰)×5²¹/5¹⁷​

Answer»

5^4Step-by-step explanation:7^0÷3^0= 1 (if POWER of any no is 1 then it's =0, THEREFORE; 1÷1=1)=1×5^21/5^17=5^21-17=5^4



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