The nth element of the sequence -1 ,2, -4, 8....is
(a)(-1)^n2^n-1
(b)2^n-1
(c)2^n
(d) none of these
plzz reply with explanation
(a)(-1)^n2^n-1
(b)2^n-1
(c)2^n
(d) none of these
plzz reply with explanation
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Answer:- Option a)
Step By Step Explanation:-
After the last step we shall simplify the answer,
Hence, Option a) is correct.