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If logx [ 0.001 ] = - 3 then ____?
  1. 10
  2. 0.001
  3. 100
  4. None of these
Explanation

Given:

logx(0.001) = -3

This can be rewritten as:

x^(-3) = 0.001

0.001 = 10^(-3)

So:

x^(-3) = 10^(-3)

This implies:

x = 10

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