Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If 
is a complex cube root of unity, then 
is equal to
A
1
B
-1
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
We have, 
?
Here, 
Follows infinite G.P. series so its sum,
Now, 
also follows infinite G.P. series so its sum
Hence,
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