New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Sequences and Series question

2008 · Shift 0 · Q48

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Mathematics
Sequences and Series
2008 · Shift 0 · Q48

Sequences and Series question

2008 · Shift 0 · Q48

JEE MainMathematicsSequences and SeriesMCQ+4 / −1

The first two terms of a geometric progression add up to 12. the sum of the third and the fourth terms is 48. If the terms of the geometric progression are alternately positive and negative, then the first term is

A
- 4
B
- 12
C
12
D
4

More from Sequences and Series

In a geometric progression consisting of positive terms, each term equals the sum of the next two terns. Then the common ratio of its progression is equals2007 · MCQ
If $a_{1}, a_{2}, .... a_{n}$ are in H.P., then the expression $a_{1} a_{2} + a_{2} a_{3} + .... + a_{n - 1} a_{n}$ is equal to2006 · MCQ
Let $a_{1}$ , $a_{2}$ , $a_{3}$ .....be terms on A.P. If $\frac{a _{1} + a _{2} + ..... a _{p}}{a _{1} + a _{2} + ..... a _{q}} = \frac{p ^{2}}{q ^{2}}, p e q, t h e n \frac{a _{6}}{a _{21}}$ equals2006 · MCQ
If $x = n = 0 \sum \infty a^{n}, y = n = 0 \sum \infty b^{n}, z = n = 0 \sum \infty c^{n},$ where a, b, c are in A.P and $∣ a ∣ < 1, ∣ b ∣ < 1, ∣ c ∣ < 1$ …2005 · MCQ
Let $T_{r}$ be the rth term of an A.P. whose first term is a and common difference is d. If for some positive integers m, n, $m e n, T_{m} = \frac{1}{n} an d T_{n} = \frac{1}{m},$ then a - d equals2004 · MCQ
If 1, $lo g_{9} (3^{1 - x} + 2), lo g_{3} (4. 3^{x} - 1)$ are in A.P. then x equals2002 · MCQ
l, m, n are the $p^{t h}$ , $q^{t h}$ and $r^{t h}$ term of a G.P all positive, $t h e n lo g l lo g m lo g n p q r 111 e q u a l s$ 2002 · MCQ
Fifth term of a GP is 2, then the product of its 9 terms is2002 · MCQ