Breaking down a GMATPrep exponents problem

srinivasskc

Srinivas Kadiyala
math_981_aed1fc51c0b92e4767ca73c48ce4ba97.png

(A) 1
(B)
math_993.5_4efc7eda2a3dfcf75e3e0794a287d54f.png

(C)
math_993.5_8b89efb3104e3443b8993d45fbcc89c3.png

(D) 18
(E) 20
 
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