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Properties of Measures of Central Tendency

If 2 log x ...

Question

If $2 log x - log y = 1$ is $x^{2} = m y$ , then value of $m$ is equal to

A

5

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B

10

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C

15

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D

20

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Solution

The correct option is B $10$
$2 log x - log y = 1$
Assuming base 10
$2 log x - log y = log 10 2 log x = log 10 + log y log x^{2} = log 10 y$
Removing log, $x^{2} = 10 y$

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