If log10 3 = 0.4771, then the value of log 15 + log 2 = A) 47.71
If log10 3 = 0.4771, then the value of log 15 + log 2 =
A) 47.71
B) 1.4771
C) 4.77
D) 0.4771
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3 Answers
Correct option is (B) 1.4771
log 15 + log 2 \(=log\,(15\times2)\) \((\because\) log A + log B = log AB)
= log 30
\(=log\,(3\times10)\)
= log 3 + log 10
= 0.4771 + 1 \((\because log\,10=log_{10}\,10=1)\)
= 1.4771
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Answered
Correct option is (A) 1.4771
log 15 + log 2 \(=log\,(15\times2)\)
= log 30
\(=log\,(10\times3)\)
= log 10 + log 3
= 1 + 0.4771 \((\because log_{10}\,10=1\,\&\,log_{10}\,3=0.4771)\)
= 1.4771
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Answered