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Evaluate log106 + log1045 - log1027 without using logarithm tables

Mathematics
WAEC 1988
Evaluate log106 + log1045 - log1027 without using logarithm tables
  • A. o
  • B. 1
  • C. 1.1738
  • D. 1.3802
  • E. 10
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Correct Answer: Option B
Explanation
log106 + log1045 - log1027

log10 \(\frac{6 \times 45}{27}\)

= log102 x 5

log1010 = 1
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