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GRE Prep Club Team Member
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For positive integers n, the integer part of the nth term of sequence
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28 Jul 2021, 03:05
28 Jul 2021, 03:05
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For positive integers n, the integer part of the nth term of sequence A equals n, while the infinite decimal part of the nth term is constructed in order out of the consecutive positive multiples of n, beginning with 2n. For instance, A_1 = 1.2345678…, while A_2 = 2.4681012… The sum of the first seven terms of sequence A is between:
A. 28 and 29
B. 29 and 30
C. 30 and 31
D. 31 and 32
E. 32 and 33
A. 28 and 29
B. 29 and 30
C. 30 and 31
D. 31 and 32
E. 32 and 33
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For positive integers n, the integer part of the nth term of sequence
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28 Jul 2021, 23:04
28 Jul 2021, 23:04
GeminiHeat wrote:
For positive integers n, the integer part of the nth term of sequence A equals n, while the infinite decimal part of the nth term is constructed in order out of the consecutive positive multiples of n, beginning with 2n. For instance, A_1 = 1.2345678…, while A_2 = 2.4681012… The sum of the first seven terms of sequence A is between:
A. 28 and 29
B. 29 and 30
C. 30 and 31
D. 31 and 32
E. 32 and 33
A. 28 and 29
B. 29 and 30
C. 30 and 31
D. 31 and 32
E. 32 and 33
\(A_1\) = 1.23
\(A_2\) = 2.46
\(A_3\) = 3.69
\(A_4\) = 4.81
\(A_5\) = 5.10
\(A_6\) = 6.12
\(A_7\) = 7.14
Sum ≈ 30.55
Hence, option C
Re: For positive integers n, the integer part of the nth term of sequence
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22 Jul 2024, 04:33
22 Jul 2024, 04:33
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
