If \( S_{r} \) denotes the sum of the first \( r \) terms of an AP ...
If \( S_{r} \) denotes the sum of the first \( r \) terms of an AP then \( \frac{S_{3 r}-S_{r-1}}{S_{2 r}-S_{2 r-1}} \) is equal
\( \mathrm{P} \) to
W.
(a) \( 2 r-1 \)
(b) \( 2 r+1 \)
(c) \( 4 r+1 \)
(d) \( 2 r+3 \)
π²PW App Link - https://bit.ly/YTAI_PWAP
πPW Website - https://www.pw.live
Other Videos By PW Solutions
| 2023-03-21 | If \( a, b, c \) are in GP and \( a, p, q \) are in AP such that \(... |
| 2023-03-21 | If \( x, y, z \) are positive numbers in AP then
\( \mathrm{P} \)
(... |
| 2023-03-21 | Let \( f(x)=\frac{1-x^{n+1}}{1-x} \) and \( g(x)=1-\frac{2}{x}+\fra... |
| 2023-03-21 | The equation \( \sqrt{x+1}-\sqrt{x-1}=\sqrt{4 x-1} \) has
\( \mathr... |
| 2023-03-21 | If \( a, b, c, d \) are four positive numbers then
\( \mathrm{P} \)... |
| 2023-03-21 | If \( a^{x}=b^{y}=c^{z} \) and \( x, y, z \) are in GP then \( \log... |
| 2023-03-21 | The solutions of the equation \( 2 x-2[x]=1 \), where \( [x]= \) th... |
| 2023-03-21 | ABCD is a square of length \( a, a \in N, a1 \). Let \( \mathrm{L}_... |
| 2023-03-21 | (A) A hyperbola, having the transverse axis of length \( 2 \sin \th... |
| 2023-03-21 | If the AM of two positive numbers be three times their geometric me... |
| 2023-03-21 | If \( S_{r} \) denotes the sum of the first \( r \) terms of an AP ... |
| 2023-03-21 | If two points \( P \) and \( Q \) on the hyperbola \( 9 x^{2}-5 y^{... |
| 2023-03-21 | \( \mathrm{ABC} \) is a right-angled triangle in which \( \angle B=... |
| 2023-03-21 | Tangents are drawn to the hyperbola \( \frac{x^{2}}{9}-\frac{y^{2}}... |
| 2023-03-21 | In the given square, a diagonal is drawn, and parallel line segment... |
| 2023-03-21 | If AM of the number \( 5^{1+x} \) and \( 5^{1-x} \) is 13 then the ... |
| 2023-03-21 | Let \( a_{1}=0 \) and \( a_{1}, a_{2}, a_{3}, \ldots, a_{n} \) be r... |
| 2023-03-21 | \( a, b, c, d, e \) are five numbers in which the first three are i... |
| 2023-03-21 | Tangents are drawn from any point on the hyperbola \( \frac{x^{2}}{... |
| 2023-03-21 | Which of the following equations in parametric form can represent a... |
| 2023-03-21 | Solutions of the differential equation \( \left(1-x^{2}\right) \fra... |
0