Aptitude - Logarithm - Discussion

Discussion Forum : Logarithm - General Questions (Q.No. 2)
2.
If log 2 = 0.3010 and log 3 = 0.4771, the value of log5 512 is:
2.870
2.967
3.876
3.912
Answer: Option
Explanation:
log5 512
= log 512
log 5
= log 29
log (10/2)
= 9 log 2
log 10 - log 2
= (9 x 0.3010)
1 - 0.3010
= 2.709
0.699
= 2709
699
= 3.876
Discussion:
71 comments Page 4 of 8.

Nirav said:   1 decade ago
Why are they dividing log 512 by log 5?

Is this a formula?

Sumeet said:   1 decade ago
{log(10/2) = log5} Can we write like this? I have a doubt!

Sriya said:   5 years ago
I am not getting this, Can anyone explain in correct way?

Mushariq said:   9 years ago
Nice explanation, thank you for all your solution.

Siddharth said:   8 years ago
@Ayesha.

log32 = log(2^5)= 5log2=5*0.3010= 1.505.

Dhivi said:   1 decade ago
Can you say the answer for the (5/512) power 1/9?

Dheeraj said:   8 years ago
@Naveen.

log27=log3^3=3log3=3 * 0.4771=1.4313.

Usha said:   1 decade ago
If log2=0.3010 and log3= 0.4771, then log75 = ?

Nagdish kewat said:   1 decade ago
What is the answer of log3(log2(log3t)) =1 t=?

Ankur said:   10 years ago
Answer is right, but too long, tell in short.


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