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Recent questions tagged number-series
10
votes
3
answers
31
GATE2014 EC-1: GA-5
What is the next number in the series? $12$ $35$ $81$ $173$ $357$ _______.
makhdoom ghaya
asked
in
Quantitative Aptitude
Mar 18, 2016
by
makhdoom ghaya
1.5k
views
gate2014-ec-1
number-series
quantitative-aptitude
numerical-answers
13
votes
4
answers
32
GATE2014 EC-3: GA-4
The next term in the series $81, 54, 36, 24,\dots $ is_________.
makhdoom ghaya
asked
in
Quantitative Aptitude
Mar 8, 2016
by
makhdoom ghaya
3.5k
views
gate2014-ec-3
number-series
quantitative-aptitude
numerical-answers
8
votes
5
answers
33
GATE2013 EE: GA-10
Find the sum to $'n'$ terms of the series $10+84+734+\dots$ $\frac{9(9^n+1)}{10} +1$ $\frac{9(9^n-1)}{8} +1$ $\frac{9(9^n-1)}{8} +n$ $\frac{9(9^n-1)}{8} +n^2$
Akash Kanase
asked
in
Quantitative Aptitude
Feb 16, 2016
by
Akash Kanase
4.1k
views
gate2013-ee
quantitative-aptitude
number-series
5
votes
2
answers
34
TIFR CSE 2015 | Part A | Question: 3
Let $|z| < 1$. Define $M_{n}(z)= \sum_{i=1}^{10} z^{10^{n}(i - 1)}?$ what is $\prod\limits_{i=0}^{\infty} M_{i}(z)= M_{0}(z)\times M_{1}(z) \times M_{2}(z) \times ...?$ Can't be determined $1/ (1 - z)$ $1/ (1 + z)$ $1 - z^{9}$ None of the above
makhdoom ghaya
asked
in
Quantitative Aptitude
Dec 2, 2015
by
makhdoom ghaya
1.1k
views
tifr2015
quantitative-aptitude
numerical-computation
number-series
6
votes
1
answer
35
TIFR CSE 2014 | Part A | Question: 7
Consider a sequence of non-negative numbers ${x_{n} : n = 1, 2, . . .}$. Which of the following statements cannot be true? $\sum ^{\infty }_{n=1} x_{n}= \infty $ and $\sum ^{\infty }_{n=1} x_{n}^{2}= \infty$. $\sum ^{\infty }_{n=1} x_{n}= \infty $ ... $\sum ^{\infty }_{n=1} x_{n} < \infty $ and $\sum ^{\infty }_{n=1} x_{n}^{2}= \infty$.
makhdoom ghaya
asked
in
Quantitative Aptitude
Nov 9, 2015
by
makhdoom ghaya
952
views
tifr2014
quantitative-aptitude
number-series
4
votes
3
answers
36
TIFR CSE 2013 | Part A | Question: 15
Let $\DeclareMathOperator{S}{sgn} \S (x)= \begin{cases} +1 & \text{if } x \geq 0 \\ -1 & \text{if } x < 0 \end{cases}$ What is the value of the following summation? $\sum_{i=0}^{50} \S \left ( (2i - 1) (2i - 3) \dots (2i - 99) \right)$ $0$ $-1$ $+1$ $25$ $50$
makhdoom ghaya
asked
in
Quantitative Aptitude
Nov 4, 2015
by
makhdoom ghaya
932
views
tifr2013
quantitative-aptitude
number-series
10
votes
1
answer
37
TIFR CSE 2013 | Part A | Question: 8
Find the sum of the infinite series $\dfrac{1}{1\times 3 \times 5} + \dfrac{1}{3\times 5\times 7} + \dfrac{1}{5\times 7 \times 9} + \dfrac{1}{7\times 9 \times 11} + ......$ $\;\;\infty $ $\left(\dfrac{1}{2}\right)$ $\left(\dfrac{1}{6}\right)$ $\left(\dfrac{1}{12}\right)$ $\left(\dfrac{1}{14}\right)$
makhdoom ghaya
asked
in
Quantitative Aptitude
Nov 4, 2015
by
makhdoom ghaya
1.3k
views
tifr2013
quantitative-aptitude
number-series
6
votes
1
answer
38
TIFR CSE 2011 | Part A | Question: 8
The sum of the first $n$ terms of the series $1, 11, 111, 1111,\dots,$ is. $\frac{1}{81}\left ( 10^{n+1}-9n-10 \right )$ $\frac{1}{81}\left ( 10^{n}-9n \right )$ $\frac{1}{9}\left ( 10^{n+1}-1\right )$ $\frac{1}{9}\left ( 10^{n+1}-n10^{n}\right )$ None of the above
makhdoom ghaya
asked
in
Quantitative Aptitude
Oct 17, 2015
by
makhdoom ghaya
994
views
tifr2011
quantitative-aptitude
number-series
2
votes
3
answers
39
TIFR2010-Maths-A-11
The series $\sum ^{\infty }_{n=1}\frac{(-1)^{n+1}}{\sqrt{n}}$ Converges but not absolutely. Converges absolutely. Diverges. None of the above.
Arjun
asked
in
Quantitative Aptitude
Oct 11, 2015
by
Arjun
812
views
tifrmaths2010
number-series
convergence
2
votes
2
answers
40
TIFR2010-Maths-A-4
The sum of the series $\frac{1}{1 \cdot 2}+ \frac{1}{2 \cdot 3}+ \frac{1}{3 \cdot 4} + \dots +\frac{1}{100 \cdot 101}$ $\frac{99}{101}$ $\frac{98}{101}$ $\frac{99}{100}$ None of the above
makhdoom ghaya
asked
in
Set Theory & Algebra
Oct 11, 2015
by
makhdoom ghaya
784
views
tifrmaths2010
number-series
1
vote
1
answer
41
Series Convergence
I'm having hard time understanding how following series converges ; 1 + 2/5 + 3/5^2 + 4/5^3 + 5/5^4 + ............ infinity
vishal8492
asked
in
Linear Algebra
Aug 22, 2015
by
vishal8492
571
views
number-series
12
votes
3
answers
42
GATE CSE 2014 Set 3 | Question: GA-4
Which number does not belong in the series below? $\qquad2, 5, 10, 17, 26, 37, 50, 64$ $17$ $37$ $64$ $26$
go_editor
asked
in
Quantitative Aptitude
Sep 28, 2014
by
go_editor
2.6k
views
gatecse-2014-set3
quantitative-aptitude
number-series
easy
24
votes
2
answers
43
GATE CSE 2014 Set 2 | Question: GA-5
The value of $\sqrt{12+\sqrt{12+\sqrt{12+\dots}}} $is $3.464$ $3.932$ $4.000$ $4.444$
go_editor
asked
in
Quantitative Aptitude
Sep 28, 2014
by
go_editor
3.2k
views
gatecse-2014-set2
quantitative-aptitude
easy
number-series
24
votes
1
answer
44
GATE CSE 2013 | Question: 61
Find the sum of the expression $\frac{1}{\sqrt{1}+\sqrt{2}}+\frac{1}{\sqrt{2}+\sqrt{3}}+\frac{1}{\sqrt{3}+\sqrt{4}}+............+\frac{1}{\sqrt{80}+\sqrt{81}}$ $7$ $8$ $9$ $10$
Arjun
asked
in
Quantitative Aptitude
Sep 24, 2014
by
Arjun
7.5k
views
gatecse-2013
quantitative-aptitude
normal
number-series
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