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Ragini
Subject: Maths
, asked on 26/3/18
In this question -> How many terms of an AP: 9,17,25......must be taken to give a sum of 636 . I know how to solve it but the problem arises when I reach this step -> 4n
^{2}
^{}
+5n-636=0 ; I know how to factorize but its diffcult to find the factors of large number like this. So kindly help and explain to how to find factors easily for these kind of sums and also using quadratic wont do any good , both methods take time .
Answer
6
Charulatha
Subject: Maths
, asked on 26/3/18
Pls... solve....
22. The sum of first n terms of an AP is 3n
^{2}
+4n. Find the 25
^{th}
term of this AP.
Solution :
Answer
1
Aman Sharma
Subject: Maths
, asked on 26/3/18
for what value of k will 3k+2 , 4k+5 and 6k-4 will form an AP??
NO LINKS PLZZZ...ANSWER IT AS SOON AS POSSIBLE
Answer
1
Hoori
Subject: Maths
, asked on 26/3/18
The angles of a triangle are in A.P .If the greatest angle is equal to sum of other two ,find the angles . No links pls !! Answer soon!!( Using ap)
Answer
1
Dipesh Kumar Karesia
Subject: Maths
, asked on 26/3/18
plz answer .. TOO CONFUSING.!!
Answer
4
Charulatha
Subject: Maths
, asked on 26/3/18
Solve this:
Q.2. If the common difference of an A.P. is 3, then
${a}_{20}-{a}_{15}$
is
(A) 5
(B) 3
(C) 15
(D) 20
Answer
3
Anjali Srivastava
Subject: Maths
, asked on 26/3/18
Solve it.
Answer
3
Yash Behl
Subject: Maths
, asked on 26/3/18
Solve this:
Q28. If p
^{th}
, q
^{th}
and r
^{th}
^{ }
term of an A.P. are a, b, c respectively, then show that
a(q – r) + b(r – p) + c (p – q) = 0.
Answer
2
अर्कज ..
Subject: Maths
, asked on 26/3/18
Q. Check graphically whether the pair of equations x+y
$\equiv $
8 and x - 2y
$\equiv $
2 is consistent. If so, solve
them graphically. Also find the coordinates of the points where the two lines meet the y-axis.
Answer
2
अर्कज ..
Subject: Maths
, asked on 26/3/18
Solve this:
Q. In an AP,
${p}^{th},{q}^{th}and{r}^{th}$
terms are respectively a, b and c. Prove that
p (b - c) + q (c - a) + r (a - b) = 0
Answer
1
अर्कज ..
Subject: Maths
, asked on 26/3/18
Q. Prove that :
$se{c}^{2}\theta +\mathrm{cos}e{c}^{2}\theta =se{c}^{2}\theta .\mathrm{cos}e{c}^{2}\theta $
Answer
1
अर्कज ..
Subject: Maths
, asked on 26/3/18
Solve this:
Q.8. The
${11}^{th}$
term of an AP. exceeds its
${4}^{th}$
term by 14. Find the common difference.
Answer
1
Khushi Jain
Subject: Maths
, asked on 25/3/18
Q. Find the sum of n terms of the series
$\left(4-\frac{1}{n}\right)+\left(4-\frac{2}{n}\right)+\left(4-\frac{3}{n}\right)+....$
Answer
2
Payal Arora
Subject: Maths
, asked on 25/3/18
Q3
3.
Find the eleventh term from the last term of the AP :
$27,23,19,.......,-65.$
Answer
3
Champ Jee
Subject: Maths
, asked on 25/3/18
Q24.
Is k=12?
In Meritnation answer key, it's given k=6! (Top 100 Que)
Q.24. For what value of k will the consecutive terms 3k + 2, 4k + 5 and 6k - 4 form an AP?
Answer
2
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^{2}^{}+5n-636=0 ; I know how to factorize but its diffcult to find the factors of large number like this. So kindly help and explain to how to find factors easily for these kind of sums and also using quadratic wont do any good , both methods take time .22. The sum of first n terms of an AP is 3n

^{2}+4n. Find the 25^{th}term of this AP.Solution :

for what value of k will 3k+2 , 4k+5 and 6k-4 will form an AP??NO LINKS PLZZZ...ANSWER IT AS SOON AS POSSIBLE

Q.2. If the common difference of an A.P. is 3, then ${a}_{20}-{a}_{15}$ is

(A) 5

(B) 3

(C) 15

(D) 20

Q28. If p

^{th}, q^{th}and r^{th}^{ }term of an A.P. are a, b, c respectively, then show thata(q – r) + b(r – p) + c (p – q) = 0.

them graphically. Also find the coordinates of the points where the two lines meet the y-axis.

p (b - c) + q (c - a) + r (a - b) = 0

Q. Prove that : $se{c}^{2}\theta +\mathrm{cos}e{c}^{2}\theta =se{c}^{2}\theta .\mathrm{cos}e{c}^{2}\theta $

Q.8. The ${11}^{th}$ term of an AP. exceeds its ${4}^{th}$ term by 14. Find the common difference.

3.Find the eleventh term from the last term of the AP :$27,23,19,.......,-65.$

Is k=12?

In Meritnation answer key, it's given k=6! (Top 100 Que)

Q.24. For what value of k will the consecutive terms 3k + 2, 4k + 5 and 6k - 4 form an AP?