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Evaluate 64.764\(^2\) - 35.236\(^2\) correct to 3 significant figures

Mathematics
JAMB 1997

Evaluate 64.764\(^2\) - 35.236\(^2\) correct to 3 significant figures

  • A. 2960
  • B. 2950
  • C. 2860
  • D. 2850
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Correct Answer: Option B
Explanation

(64.764 - 35.236)(64.764 + 35.236)

= 29.528 x 100

= 2950 to 3 sig. fig.

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