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Aptitude - Logarithm - Discussion

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"Do not wait for leaders; do it alone, person to person."
- Mother Teresa
4. 

If log 27 = 1.431, then the value of log 9 is:

[A]. 0.934[B]. 0.945
[C]. 0.954[D]. 0.958

Answer: Option D

Explanation:

log 27 = 1.431

log (33 ) = 1.431

3 log 3 = 1.431

log 3 = 0.477

log 9 = log(32 ) = 2 log 3 = (2 x 0.477) = 0.954.
Arvind said: (Thu, Jan 19, 2012 08:13:35 PM)    
 
How come log3 value .477
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