1.

If \[a=({{2}^{-2}}-{{2}^{-3}})\], \[b=({{2}^{-3}}-{{2}^{-4}})\] and\[c=({{2}^{-4}}-{{2}^{-2}})\] then find : (i) \[{{a}^{3}}+{{b}^{3}}+{{c}^{3}}\]                      (ii) \[10\text{ abc}\]

A. (i) (ii) 9/2048 7/2048                
B. (i) (ii) 3/1024 5/2048                
C. (i) (ii) -3/1024 -10/2048                
D. (i) (ii) -9/2048 -15/1024
Answer» E.


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