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Answer: EIf 2^m = 5 and 5^(1/n) = 3, then (3^n)/2^(-2m) =
A) 1/25
B) 1/5
C) 5
D) 25
E) 125
If 2^m = 5 and 5^(1/n) = 3, we can substitute 2^m in place of 5 in the second equation to get 2^m^(1/n) = 3. Raise both sides to the n to getBrent@GMATPrepNow wrote:Here's a question I just made up.
Difficulty level: 700ish
Answer: EIf 2^m = 5 and 5^(1/n) = 3, then (3^n)/2^(-2m) =
A) 1/25
B) 1/5
C) 5
D) 25
E) 125
Another approach:Brent@GMATPrepNow wrote:If 2^m = 5 and 5^(1/n) = 3, then (3^n)/2^(-2m) =
A) 1/25
B) 1/5
C) 5
D) 25
E) 125
An alternate approach is to BALLPARK.Brent@GMATPrepNow wrote:Here's a question I just made up.
Difficulty level: 700ish
If 2^m = 5 and 5^(1/n) = 3, then (3^n)/2^(-2m) =
A) 1/25
B) 1/5
C) 5
D) 25
E) 125
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