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Recent questions tagged arithmetic-series

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self doubts
What is the value of summation of n+$\frac{n}{2}$ + $\frac{n}{4}$ + …….+ 1 where n is an even positive integer ?

Swarnava Bose asked in Quantitative Aptitude Jul 23, 2023

by Swarnava Bose

519 views

0 votes

0 answers

2

Best Open Video Playlist for Arithmetic Series Topic | Quantitative Aptitude
Please list out the best free available video playlist for Arithmetic Series from Quantitative Aptitude as an answer here (only one playlist per answer). We'll then select the best playlist and add to GO classroom ... ones are more likely to be selected as best. For the full list of selected videos please see here

makhdoom ghaya asked in Study Resources Aug 25, 2022

by makhdoom ghaya

237 views

3 votes

2 answers

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GATE Chemical 2020 | GA Question: 5
The difference between the sum of the first $2n$ natural numbers and the sum of the first $n$ odd natural numbers is ______ $n^2-n$ $n^2+n$ $2n^2-n$ $2n^2+n$

soujanyareddy13 asked in Quantitative Aptitude Nov 16, 2020

by soujanyareddy13

3.7k views

5 votes

7 answers

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GATE Civil 2020 Set 1 | GA Question: 8
Insert seven numbers between $2$ and $34$, such that the resulting sequence including $2$ and $34$ is an arithmetic progression. The sum of these inserted seven numbers is ______. $120$ $124$ $126$ $130$

go_editor asked in Quantitative Aptitude Feb 27, 2020

2.0k views

9 votes

2 answers

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GATE Mechanical 2020 Set 1 | GA Question: 8
The sum of the first $n$ terms in the sequence $8,\:88,\:888,\:8888,\dots$ is ________. $\dfrac{81}{80}\left ( 10^{n}-1 \right )+\dfrac{9}{8}n \\$ $\dfrac{81}{80}\left ( 10^{n}-1 \right )-\dfrac{9}{8}n \\$ $\dfrac{80}{81}\left ( 10^{n}-1 \right )+\dfrac{8}{9}n \\$ $\dfrac{80}{81}\left ( 10^{n}-1 \right )-\dfrac{8}{9}n$

go_editor asked in Quantitative Aptitude Feb 19, 2020

965 views

3 votes

2 answers

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ISI2014-DCG-23
The sum of the series $\:3+11+\dots +(8n-5)\:$ is $4n^2-n$ $8n^2+3n$ $4n^2+4n-5$ $4n^2+2$

Arjun asked in Quantitative Aptitude Sep 23, 2019

by Arjun

556 views

1 vote

2 answers

7

ISI2014-DCG-61
If $l=1+a+a^2+ \dots$, $m=1+b+b^2+ \dots$, and $n=1+c+c^2+ \dots$, where $\mid a \mid <1, \: \mid b \mid < 1, \: \mid c \mid <1$ and $a,b,c$ are in arithmetic progression, then $l, m, n$ are in arithmetic progression geometric progression harmonic progression none of these

Arjun asked in Quantitative Aptitude Sep 23, 2019

by Arjun

525 views

0 votes

1 answer

8

ISI2014-DCG-62
If the sum of the first $n$ terms of an arithmetic progression is $cn^2$, then the sum of squares of these $n$ terms is $\frac{n(4n^2-1)c^2}{6}$ $\frac{n(4n^2+1)c^2}{3}$ $\frac{n(4n^2-1)c^2}{3}$ $\frac{n(4n^2+1)c^2}{6}$

Arjun asked in Quantitative Aptitude Sep 23, 2019

by Arjun

363 views

2 votes

4 answers

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ISI2015-DCG-1
The sequence $\dfrac{1}{\log_3 2}, \: \dfrac{1}{\log_6 2}, \: \dfrac{1}{\log_{12} 2}, \: \dfrac{1}{\log_{24} 2} \dots $ is in Arithmetic progression (AP) Geometric progression ( GP) Harmonic progression (HP) None of these

gatecse asked in Quantitative Aptitude Sep 18, 2019

567 views

1 vote

3 answers

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ISI2017-DCG-8
If $x,y,z$ are in $A.P.$ and $a>1$, then $a^x, a^y, a^z$ are in $A.P.$ $G.P$ $H.P$ none of these

gatecse asked in Quantitative Aptitude Sep 18, 2019

489 views

0 votes

1 answer

11

ISI2017-DCG-21
If $a,b,c$ are in $A.P.$ , then the straight line $ax+by+c=0$ will always pass through the point whose coordinates are $(1,-2)$ $(1,2)$ $(-1,2)$ $(-1,-2)$

gatecse asked in Quantitative Aptitude Sep 18, 2019

287 views

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Recent questions tagged arithmetic-series