The value of $l o g_{10} 2 + 1$ in the form of $l o g_{10} x$ is?

l o g_{10} 30

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l o g_{10} 50

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l o g_{10} 20

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l o g_{10} 40

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Solution

The correct option is C $l o g_{10} 20$
Given, $l o g_{10} 2 + 1$
$= l o g_{10} 2 + l o g_{10} 10$ [As, $l o g_{10} 10 = 1$ ]
$= l o g_{10} (2 \times 10)$ [Using loga m + loga n = loga mn]
$= l o g_{10} 20$

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