Q. Which of the following is true for log_a(bc)?
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A.
log_a(b) + log_a(c)
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B.
log_a(b) - log_a(c)
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C.
log_a(bc) = log_a(b) * log_a(c)
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D.
None of the above
Solution
log_a(bc) = log_a(b) + log_a(c) by the product rule of logarithms.
Correct Answer: A — log_a(b) + log_a(c)
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Q. Which of the following numbers is a perfect square?
Solution
25 is a perfect square (5^2).
Correct Answer: C — 25
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