NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Expert Answers
ALL
Champ Jee
Subject: Maths
, asked on 30/3/18
Q5. If a
_{n}
=
$\frac{n(n-3)}{x+4}$
, then find 18th term of this sequence.
Answer
1
Raghav Singh
Subject: Maths
, asked on 29/3/18
In this when i put the value a=8 earlier means in fraction i gwt a wrong answer why?
Answer
1
Kishore
Subject: Maths
, asked on 28/3/18
In an ap a=wx+54?wx and d=?wx+dx-y^2.find the a.p
Answer
1
Mehak
Subject: Maths
, asked on 28/3/18
In an AP common difference (d) is -4 and the seventh term (a7) is 4 then find the first term
Answer
4
Amrit Ranjan
Subject: Maths
, asked on 28/3/18
Any last minutes tips teachers and best of luck for your exams all my dear friends
Answer
2
Khushi Jain
Subject: Maths
, asked on 28/3/18
Solve this:
$Ifthe{m}^{th}termofanA.P.is1/nand{n}^{th}termis1/mthenshowthatits(mn{)}^{th}termis1.$
Answer
1
Jass Kahlon
Subject: Maths
, asked on 27/3/18
Find the sum of first 8 multiples of 3
Answer
3
Champ Jee
Subject: Maths
, asked on 27/3/18
Question in the pic! Pls... It's readable!:
Q. and arithmetic progression has an even number of terms. The sum of the terms at odd places is 440 and the sum of the terms at even place is 520. THe last term is 156 more than the first term.
A) 20
B) 30
C) 40
D) 60
Answer
2
Ashutosh Saini
Subject: Maths
, asked on 27/3/18
Find the sum of first multiple of 3
Answer
2
Himanshu Sharma
Subject: Maths
, asked on 27/3/18
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
1
Champ Jee
Subject: Maths
, asked on 27/3/18
Q. If a,b,c are in A.P. Show that
$\frac{1}{\sqrt{b}+\sqrt{c}},\frac{1}{\sqrt{c}{\displaystyle +}{\displaystyle \sqrt{a}}},\frac{1}{\sqrt{a}{\displaystyle +}{\displaystyle \sqrt{b}}}$
are in A.P
Answer
3
Sameer Ahmed
Subject: Maths
, asked on 27/3/18
Solve fast:
21. Two circles touch internally. The sum of their areas is 116
$\mathrm{\pi}$
cm
^{2}
and the distance between their centres is 6 cm. Find the radis of the circlm.
22. If 1+4+7+10+.....+x=287, find the value of x.
Answer
3
Himanshu Sharma
Subject: Maths
, asked on 27/3/18
Ans ppplls
Answer
1
Dipesh Kumar Karesia
Subject: Maths
, asked on 27/3/18
Answer this question plz:
2. Find the two middle terms of the A.P.
$-\frac{4}{2}-1,-\frac{2}{3},4\frac{1}{3}$
If the sum of the squares of two numbers which are consecutive multiples of 4 is 1360, find the numbers.
Answer this question plz..
Answer
1
Devika
Subject: Maths
, asked on 27/3/18
Solve this:
Q.12. The sum of first six terms of an A.P. is 42. The ratio of its
${10}^{th}$
term to its
${30}^{th}$
term is 1 : 3. Find the first term of the A.P.
Answer
1
Prev
1
2
3
4
5
Next
What are you looking for?

_{n}= $\frac{n(n-3)}{x+4}$, then find 18th term of this sequence.$Ifthe{m}^{th}termofanA.P.is1/nand{n}^{th}termis1/mthenshowthatits(mn{)}^{th}termis1.$

Q. and arithmetic progression has an even number of terms. The sum of the terms at odd places is 440 and the sum of the terms at even place is 520. THe last term is 156 more than the first term.

A) 20

B) 30

C) 40

D) 60

Q. If a,b,c are in A.P. Show that $\frac{1}{\sqrt{b}+\sqrt{c}},\frac{1}{\sqrt{c}{\displaystyle +}{\displaystyle \sqrt{a}}},\frac{1}{\sqrt{a}{\displaystyle +}{\displaystyle \sqrt{b}}}$ are in A.P

21. Two circles touch internally. The sum of their areas is 116 $\mathrm{\pi}$ cm

^{2}and the distance between their centres is 6 cm. Find the radis of the circlm.22. If 1+4+7+10+.....+x=287, find the value of x.

2. Find the two middle terms of the A.P. $-\frac{4}{2}-1,-\frac{2}{3},4\frac{1}{3}$ If the sum of the squares of two numbers which are consecutive multiples of 4 is 1360, find the numbers. Answer this question plz..

Q.12. The sum of first six terms of an A.P. is 42. The ratio of its ${10}^{th}$ term to its ${30}^{th}$ term is 1 : 3. Find the first term of the A.P.