If $3^{4 x - 2} = 729$ , then the value of x is

3

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1.2

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2

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None of these

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Solution

The correct option is B $2$
Use log on both sides
$4 \times x - 2 = {log}_{3} 729 {log}_{3} 729 = 6$
$x = 2$

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