Subject: Maths, asked on 20/8/17

## If Sr denotes the sum of first r terms of an A.P.,then show that S3r - Sr-1/S2r - S2r-1 equals 2r+1.

Subject: Maths, asked on 16/8/17

## Plz answer this question Subject: Maths, asked on 16/8/17

## Plz answer this..

Subject: Maths, asked on 16/8/17

## Plz.answer. this question..asap

Subject: Maths, asked on 16/8/17

## if 1 ,logyx ,logzx,-25logxz qre in AP ,then prove that x=y^-1=z^3

Subject: Maths, asked on 15/8/17

## if a,b,c are 3 unequal number such that a ,b,c are in AP and b-a,c-b are in GP. find a:b:c

Subject: Maths, asked on 15/8/17

## if the sum of n terms of a progression be a quadratic expression in n ,show that it is an ap

Subject: Maths, asked on 13/8/17

## if A and G are arithmatic and geometric means between 2 no.s prove that the no.s are: A +- sqrt [(A+G)(A-G)]

Subject: Maths, asked on 13/8/17

## determine if 1111...111 (91 digits) is prime or composite

Subject: Maths, asked on 11/8/17

## Q1

Subject: Maths, asked on 11/8/17

## Ex(11.2)

Subject: Maths, asked on 11/8/17

## Pls solve Q6 fast its urgent

Subject: Maths, asked on 11/8/17

## Pls solve Q4 fast

Subject: Maths, asked on 21/7/17

## N, the set of natural numbers, is partitioned into subsets S1={1}, S2={2,3}, S3={4,5,6}, S4={7,8,9,10}. The last term of these groups is 1, 1+2, 1+2+3, 1+2+3+4 and so on. Find the sum of the elements in the subset S50.

Subject: Maths, asked on 21/7/17

## If 9 Arithmetic and harmonic means be inserted between 2 and 3, prove that A+(6/H)=5 where A is any of the arithmetic means and H is the corresponding harmonic mean.

What are you looking for?