Logarithms Practice Test 2

Question : 28 of 39

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\log_3 11 .\log_11 13 .\log_13 15 .\log_15 27 = ?

Solution:

\log_3 11 .\log_11 13 .\log_13 15 .\log_15 27

={\log11}/{\log 3}×{\log13}/{\log 11}×{\log15}/{\log13}×{\log27}/{\log15}

={\log27}/{\log 3}=\log_3 3^3=3\log_3 3=3

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