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Write the logarithmic form of 921/5 = 4.

  1. log924=15
  2. log154=92
  3. log92(15)=3
  4. None of these

Answer (Detailed Solution Below)

Option 1 : log924=15

Detailed Solution

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Concept:

ab=x⇔logax=b, where a≠1 and a > 0 and x be any number.

Calculation:

Given: 921/5 = 4.

As we know that, ab=x⇔logax=b.

Comparing 921/5 = 4 with ab=x we have,

Here, a = 92, b = 1 / 5 and x = 4.

So, the logarithmic form of 921/5 = 4 is log924=15.
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