Does log x mean ln x on the PCAT?

[08hussal]

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I'm studying from Princeton's Cracking the PCAT textbook for the Quantitative section, and it says that on the PCAT whenever you see log x you should assume a base of e, thus log x = ln x.

For those of you who have already taken the PCAT, could you let me know if this is true? It doesn't really make sense to me why they would to that.

 

[sunshao]

um I don't know if it is a special case that the book is talking about, but generally u need to break down the equation to simpler form and solve a missing variable

 

[sanovin]

I normally would assume log x is referring to base 10 log. If the PCAT meant to use log base e, they would use ln.

 

[MGM921]

I don't know why you would make the assumption... with log you assume is base of 10.