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`6.75xx10^(3)` तथा `4.52xx10^(2)` का योग उचित सार्थक अंको में ज्ञात कीजिये ।

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` {:(6.75 xx10^(3) =" 6750"),( 4 .52 xx 10 ^(2) = +452 ),( "इनका योग"=underline bar(7202)=7.202xx10^(3)):}`
प्रयुक्त अंको दशमलव में बाद न्यूतम अंक दो है अंत : योगफल में दशमलव के बाद दो अंक होने चाहिये । परिशोधित करने पर
योगफल `= 7.20xx10^(3)`

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