Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
tutors
pricing
login
X
ASK
Home
>>
AIMS
The $n^{th}$ term of the series 3+7+13+21+....is
$\begin{array}{1 1}(A)\;4n-1&(B)\;n^2+2n\\(C)\;n^2+n+1&(D)\;n^2+2\end{array} $
aims
class11
q8
Share
asked
Apr 15, 2014
by
sreemathi.v
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1 Answer
The $n^{th}$ term of the series 3+7+13+21+....is $n^2+n+1$
Hence (C) is the correct answer.
answered
Apr 15, 2014
by
sreemathi.v
Please
log in
or
register
to add a comment.
Related questions
Find the sum of $n$ terms of the series whose $n^{th}$ term is given by $n(n+1)(n+4)$
cbse
class11
ch9
bookproblem
exercise9-4
easy
sec-b
q8
math
sequences-and-series
asked
Mar 24, 2014
by
rvidyagovindarajan_1
1
answer
Find the value of $n$ such that the $n^{th}$ term of the sequences 27,24,21------- and 2,4,6----- are equal.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q65
asked
Jan 5, 2014
by
yamini.v
1
answer
The $n^{th}$ term of series is $\frac{1}{1}$, $\frac{(1+2)}{2}$, $\frac{(1+2+3)}{3}$......is
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q85
asked
Jan 17, 2014
by
yamini.v
1
answer
Find the sum of $n$ terms of the series whose $n^{th}$ term is $(2n-1)^2$
cbse
class11
ch9
bookproblem
exercise9-4
sec-b
easy
q10
math
sequences-and-series
asked
Mar 27, 2014
by
rvidyagovindarajan_1
1
answer
Find the sum of $n$ terms of the series whose $n^{th}$ term is given by $n^2+2^n$.
cbse
class11
ch9
bookproblem
exercise9-4
medium
sec-b
q9
math
sequences-and-series
asked
Mar 24, 2014
by
rvidyagovindarajan_1
1
answer
Find the first 5 terms of the series whose $n^{th} $ term is $a_n=n(n+2)$
cbse
class11
bookproblem
ch9
exercise9-1
easy
sec-a
q1
math
sequences-and-series
asked
Feb 15, 2014
by
rvidyagovindarajan_1
1
answer
Find the sum of 8 terms of the series whose $n^{th}$ term is given by $n^2+2^n$
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q76
asked
Jan 6, 2014
by
yamini.v
1
answer
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...