Subject: Maths, asked on 23/9/17

## Q. If 4th, 7th, 10th terms of a G.P. are p,q,r respectively then (A) ${p}^{2}={q}^{2}+{r}^{2}$           (B) ${q}^{2}=pr$              (C) ${p}^{2}=qr$             (D)

Subject: Maths, asked on 22/9/17

## solve it Q. Find (i) $\sum _{r=0}^{9}\frac{{r}^{2}}{{r}^{2}+{\left(9-r\right)}^{2}}$

Subject: Maths, asked on 21/9/17

## Dear expert, why the above sum is done so elaborately?? Why is it not done in short as follows:a=1,  l=11 ​Therefore,  Sn=n/2(a+l) or,  36=n/2(1+11) or,  36=(n/2)*12 or,  36=6n or,  n=6

Subject: Maths, asked on 19/9/17

## EXAMPLE 16. Show that there is no A.P. which consists of only distinct prime numbers. EXAMPLE 17. Show that in an A.P. the sum of the terms equidistant from the beginning and end is always same and equal to the sum of first and last terms.

Subject: Maths, asked on 17/9/17

## Q). If the term of a G.P. are x - y and ${x}^{2}+xy+{y}^{2}$ respectively, then what is the ${11}^{th}$ term of this G.P?

Subject: Maths, asked on 17/9/17

## Plz give the answer

Subject: Maths, asked on 16/9/17

## 1 + (2 + 3) + (4 + 5 + 6)... up to n terms. Find the sum of the nth bracket.

Subject: Maths, asked on 15/9/17

## Qn. No. 29: 29. If the mth term ofa H.P be n and nth term be m, then the rth term will be.

Subject: Maths, asked on 13/9/17

## The nth term of a sequence is equal to half of the sum of its first (n – 1) terms. If T1 = 10, then what is the value of T9? (A) $\frac{10.935}{16}$                  (B) $\frac{10.935}{32}$                    (C) $\frac{10.935}{64}$                (D) $\frac{10.935}{128}$

Subject: Maths, asked on 12/9/17

## 45th question

Subject: Maths, asked on 10/9/17

## 38th question Q.38. If $S=\sum _{n=1}^{99}\frac{{5}^{100}}{{\left(25\right)}^{n}+{5}^{100}}$ (A) S = 49.5 (B) S = 50 (C) S = 49 (D) S = 50.5

Subject: Maths, asked on 4/9/17

## Please solve Q.no.25 of ex-9.3 by any other method.The ncert solution given by meritnation of this question is too lengthy and sometimes confusing thats why please solve this question by any other short method.

Subject: Maths, asked on 1/9/17

## 5 distinct 2 digit no. are in G.P find the middle term?

Subject: Maths, asked on 29/8/17

## 5. If $\frac{1}{{1}^{4}}+\frac{1}{{2}^{4}}+\frac{1}{{3}^{4}}+...+\infty =\frac{{\pi }^{4}}{90}$, then the value of $\frac{1}{{1}^{4}}+\frac{1}{{3}^{4}}+\frac{1}{{5}^{4}}+...+\infty$ is

Subject: Maths, asked on 23/8/17

## ​If nth term of the series 25+29+33+.... and 3+4+6+9+.... are equal, then find n.

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