1.

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Answer»

(3^-1 + 4^-1 + 5^-1)^0

= (1/3 + 1/4 + 1/5)^0

= [(20 + 15 + 12)/60]^0

= (42/60)^0

= (7/10)^0

= (7)^0/10^0

= 1/1 = 1



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