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Multiply 3.4 x 10\(^{-5}\) by 7.1 x 10\(^8\) and leave the answer in standard form. 

Mathematics
WAEC 2024

Multiply 3.4 x 10\(^{-5}\) by 7.1 x 10\(^8\) and leave the answer in standard form. 

  • A. 2.414 x 10\(^2\)
  • B. 2.414 x 10\(^3\)
  • C. 2.414 x 10\(^4\)
  • D. 2.414 x 10\(^5\)
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Correct Answer: Option C
Explanation

3.4 x 10\(^{-5}\) by 7.1 x 10\(^8\) = ( 3.4 x 7.1) x 10\(^{-5 + 8}\)

= 24.14 x 10\(^3\)

= 2.414 x 10\(^4\)

 


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