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$ \dfrac{1}{2}\;  \log_{10}25 – 2 \log_{10}3 + \log_{10}18$ equals $:$

  1. $18$
  2. $1$
  3. $\log_{10}3$
  4. None of these
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option B

by using property log a ^b = b* log a

log 5 – log 9 + log 18

log (5 *18 /9)

log 10 =1 (BECAUSE BASE IS 10 )

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