Please help with this question from GMAT Prep.
If the operation @ is defined for all positive integers x and w by x @ w = 2^x/2^w, then (3 @ 1) @ 3 =
A. 2
B. 4
C. 8
D. 16
E. 32
Operation Problem
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x @ w = 2^x/2^w = 2^(x-y)monteleone82 wrote:Please help with this question from GMAT Prep.
If the operation @ is defined for all positive integers x and w by x @ w = 2^x/2^w, then (3 @ 1) @ 3 =
A. 2
B. 4
C. 8
D. 16
E. 32
(3 @ 1) @ 3= (2^(3-1)) @3
=2^2@3
=4@3
=2^(4-3)
=2
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