The sum of the given two numbers with regard to significant figures is

1.	The sum of the given two numbers with regard to significant figures is (5.0 xx 10^(-8) ) + (4.5 xx 10^(-6) )=
Answer» `4.55 XX 10^(-6)` `4.5 xx 10^(-6)` `4.6 xx 10^(-6)` `4 xx 10^(-6)` ANSWER :C

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