BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
Featured Course
Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.
(2^(4-1)^2)/(2^(3-2) = (2^3^2)/(2^1) = (2^9)/2 = 2^(9-1) = 2^8shibal wrote:I just took an official CAT with a pretty good outcome... but I don't know why I got the FIRST freakin question wrong.... i did 75 times and still can't get to the right answer...
(2^(4-1)^2)/(2^(3-2)
OA: [spoiler]2^8[/spoiler]
but by exponent rules (2^3)^2 be 2^(3*2)???Rahul@gurome wrote:(2^(4-1)^2)/(2^(3-2) = (2^3^2)/(2^1) = (2^9)/2 = 2^(9-1) = 2^8shibal wrote:I just took an official CAT with a pretty good outcome... but I don't know why I got the FIRST freakin question wrong.... i did 75 times and still can't get to the right answer...
(2^(4-1)^2)/(2^(3-2)
OA: [spoiler]2^8[/spoiler]
The question is (2^(4-1)^2)/(2^(3-2)shibal wrote:
but by exponent rules (2^3)^2 be 2^(3*2)???
Rahul@gurome wrote:The question is (2^(4-1)^2)/(2^(3-2)shibal wrote:
but by exponent rules (2^3)^2 be 2^(3*2)???
Numerator = (2^(4-1)^2) = 2^3^2
3^2 = 9, so numerator reduces to 2^9
Now denominator = 2^(3-2) = 2^1 = 2
Therefore, 2^9/2 = 2^(9-1) = 2^8
We cannot write (2^3)^2 = 2^(3*2), as 2^3^2 = 2^(3^2) = 2^9
2^3^2 means 2 is a power of 3, which is again a power of 2, so first solve 3^2 = 9 and then the expression reduces to 2^9.
Does that help?
Yes definitely, they are different.shibal wrote:
hummm so can I conclude that (2^3)^2 is different from (2^3^2)?
New here Create free account
