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If (n^5 4n7) is even, what does
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Updated on: 03 Oct 2023, 21:58
Updated on: 03 Oct 2023, 21:58
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If \((n^5 −4n−7)\) is even, what does \(( − 1 )^n + ( − 1 ) ^{(n+4)} +( − 1 )^{(n-1)}\) equal to
A. -3
B. -1
C. 0
D. 1
E. 3
A. -3
B. -1
C. 0
D. 1
E. 3
Originally posted by xoxo on 03 Oct 2023, 03:34.
Last edited by GeminiHeat on 03 Oct 2023, 21:58, edited 3 times in total.
Last edited by GeminiHeat on 03 Oct 2023, 21:58, edited 3 times in total.
renamed topic
Re: If (n^5 4n7) is even, what does
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03 Oct 2023, 09:25
03 Oct 2023, 09:25
Expert Reply
Please sir post the question under the right sub-forum, which is PS not in general quant
Also provide the OA
Kindly follow the rules
Also provide the OA
Kindly follow the rules
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
If (n^5 4n7) is even, what does
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03 Oct 2023, 22:00
03 Oct 2023, 22:00
1
Expert Reply
Carcass wrote:
Please sir post the question under the right sub-forum, which is PS not in general quant
Also provide the OA
Kindly follow the rules
Also provide the OA
Kindly follow the rules
The answer should be D,
If \((n^5 −4n−7)\) is even, it means n is even and if n is even \(( − 1 )^n + ( − 1 ) ^{(n+4)} +( − 1 )^{(n-1)}\) will equal to 1.
