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JAMB Mathematics 2020 Paper

Question : 11

Total: 40

If log

_{10}

_{10}

_{10}

4.5

Solution:

log $_{10}$ 2 = 0.3010 and log $_{10}$ 3 = 04771

log $_{10} 4.5 = \log_{10}$ ( $\frac{3 \times 3}{2}$ )

log $_{10}$ 3 + log $_{10}$ 3 - log $_{10}$ 2 = 0.4471 + 0.771 - 0.3010

= 0.6532

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