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Questions asked by yamini.v
Questions
1333
questions
1
answer selected
The sum of integers from 1 to 200 that are divisible by 2 or 5 is
jeemain
math
class11
ch9
sequences-and-series
easy
q32
asked
Jan 2, 2014
1
answer
If $a, b, c$ are in $AP$ and $a^2,b^2,c^2$ are in $HP$, how are $a, b$ and $\large\frac{-c}{2}$ related?
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q31
asked
Jan 2, 2014
1
answer
If the $ i^{th},j^{th}\; and\; k^{th} $ term of an AP and a GP are equal and are $x,y,z$ find the value of $x^{(y-z)}\;.y^{(z-x)}\;.z^{(x-y)}$
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q30
asked
Jan 2, 2014
1
answer
If a$\xi\;b$ are two positive integers,x is their AM and $y\;\xi\;z$ are two GMs then calculate the value of $\frac{y^3+z^3}{xyz}$
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q29
asked
Jan 2, 2014
1
answer
If the harmonic mean H and geometric mean G of two positive numbers a and b are in ratio 3:5, then a and b are in the ratio
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q28
asked
Jan 2, 2014
1
answer
In a triangle $\bigtriangleup ABC$,a,b,c are its sides ,A,B $\xi\;$ C are its angles, if $\cot A,\cot B\;\xi\;\cot C$ are in AP , the a,b, and c are in which progression?
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q27
asked
Jan 2, 2014
1
answer
An infinite GP has its first term as x and sum is 6 , then which of the following is true?
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q26
asked
Jan 2, 2014
1
answer
If 5, x, y, z, 1280 are in GP, what are the values of x, y, z.
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q25
asked
Jan 2, 2014
1
answer
If the $4^{th}$ term of a GP is the square of its second term and the first term is -2. Find the $7^{th}$ term of the GP.
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q24
asked
Jan 2, 2014
1
answer
Given that a,b$\xi$ c are in AP,which of the following is true?
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q23
asked
Jan 2, 2014
1
answer
Find 3 numbers in AP whose sum is 18 and the sum of its cube is 972.
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q22
asked
Jan 1, 2014
1
answer
Find n such that is $\large\frac{512}{729}\;$is the nth term of the GP 18,-12,8,-----------------
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q21
asked
Jan 1, 2014
1
answer
Find n where 1536 is the nth term of the series 3,6,12---------------
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q20
asked
Jan 1, 2014
1
answer
What are next two terms of the GP $\sqrt{2},\;1/\sqrt{2},\;1/2\sqrt{2}$
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q19
asked
Jan 1, 2014
1
answer
If both the roots of the quadratic equation $(b-c)x^2+(c-a)x+(a-b)=0$ are equal. Then $a, b, c$ are in
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q18
asked
Dec 31, 2013
1
answer
If both the roots of the quadratic equation $(b-c)x^2+(c-a)x+(a-b)=0$ are equal.Then a,b,c are in
jeemain
math
class11
unit7
sequences-and-series
easy
q18
asked
Dec 31, 2013
0
answers
If $a^2,b^2,c^2\;$ are in AP ,$\frac{1}{b+c},\frac{1}{a+c},\frac{1}{b+a}\;$ are in
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q17
asked
Dec 31, 2013
1
answer
The sum of terms of a series is $\frac{2^n-1}{3}$.What is the type of series AP or GP. What is the value of d or r (common difference of AP or common ratio of GP)
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q16
asked
Dec 31, 2013
1
answer
Find the sum of series 4 + 44 + 444 + 4444 +------upto n terms.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q15
asked
Dec 31, 2013
1
answer
In a GP, the ratio of the sum of first 3 terms to the sum of first 6 terms is 125/152. Find the common of the GP.
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q14
asked
Dec 31, 2013
1
answer
The product of 3 numbers in a GP is 64 and the sum of product of numbers taken in pairs is 56. Find the three numbers in GP.
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q13
asked
Dec 31, 2013
1
answer
If 4 positive numbers a, b, c and d are in HP, which of the following is true.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q12
asked
Dec 31, 2013
1
answer
Given that $\frac{S_{1}}{S_{2}}=\frac{3n+8}{7n+5}$, $\frac{S_{1}}{S_{2}}$ is the ratio of sum of two APs to n terms, find the ratio of the 11<sup>th</sup> terms of the two APs.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q11
asked
Dec 31, 2013
1
answer
Find the sum of the series -1 + 4 - 9 + 16 - 25 +-----+ 4008004.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q10
asked
Dec 31, 2013
1
answer
Find the sum of the series $1^2$ - $2^2$ + $3^2$ - $4^2$ + $5^2$ - $6^2$.....$1000^2$.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q9
asked
Dec 31, 2013
1
answer
In an AP, the sum of n terms is $n^2+1$. Find the 16th term.
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q8
asked
Dec 30, 2013
1
answer
In an AP, the sum of n terms is a function of n, $S_{n}=3n^2+2n.$ Find the rth term.
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q7
asked
Dec 30, 2013
1
answer
In a series -9,-6,-3,----, find the number of terms n to get a sum $S_{n}$ = 66.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q6
asked
Dec 30, 2013
1
answer
If the 7th term of an AP is 23 and the 12th term is 38, find the first term 'a' and common difference 'd'.
jeemain
math
class11
ch9
sequences-and-series
easy
arithmetic-progression
q5
asked
Dec 30, 2013
1
answer
Find the sum of the series 1, $\frac {7}{5}$, $\frac {13}{25}$, $\frac {19}{25}$,----,$\infty$.
jeemain
math
class11
ch9
sequences-and-series
easy
sum-of-n-terms-of-special-series
q4
asked
Dec 30, 2013
1
answer
Given that four positive numbers are in HP, which of the following is true.
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q3
asked
Dec 30, 2013
1
answer
Among 5 numbers a, b, c, d and e the relationships are: a, b, c are in AP and b, c, d are in GP and c, d, e are in HP. Find b, c, d if a = 2 and e = 18.
jeemain
math
class11
ch9
sequences-and-series
easy
relationship-between-ap-and-gm
q2
asked
Dec 30, 2013
2
answers
In a GP, the first term is $312\large\frac{1}{2}$, the common ratio is $\large\frac{1}{2}$. Find the sum of the series to $\infty$ terms.
jeemain
math
class11
ch9
sequences-and-series
easy
geometric-progression
q1
asked
Dec 30, 2013
1
answer
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