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If log10x -...

Question

If ${log}_{10} (x - 10) = 1$ , then value of $x$ is

A

10

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B

13

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C

20

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D

26

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Solution

The correct option is C $20$
Since, ${log}_{10} (x - 10) = 1$

$⟹ (x - 10) = 10^{1}$

$⟹ x = 20$ .

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