Subject: Maths, asked on 26/3/19

## 12. Sum of 5th term to 8th term of an arithmetic sequence is 70. Sum 10th term to 13th term is 130. (a) What is the 9th term of this sequence? (b) What is the 7th term? (c) Find the common difference of the sequence

Subject: Maths, asked on 8/3/19

## find sum of natural numbers from n to n-2

Subject: Maths, asked on 8/3/19

## 5. For an arithmetic sequence with common difference  ' d ', prove that the difference between the sum of the first  n terms and that of the next  n   terms is n2d .

Subject: Maths, asked on 8/3/19

## The ratio between the 2nd term and the 5th term of an arithmetic sequence is 5 : 11.              a) Find the ratio between the 1st term and the common difference.               b)Find the ratio between the 4th term and the 8th term .

Subject: Maths, asked on 7/3/19

Subject: Maths, asked on 6/3/19

## 15,33,51,..... are terms of an ap.prove that if 1 is added to the sum  of consecutive terms from beginning  , it is a perfect square.please give answer expertss

Subject: Maths, asked on 3/3/19

## 15,33,51.. is an ap.prove that if 1 is added to sum of consecutive terms of this sequence ,it will be perfect square

Subject: Maths, asked on 1/3/19

Subject: Maths, asked on 14/2/19

Subject: Maths, asked on 2/2/19

Subject: Maths, asked on 12/1/19

## the angles of a nine-sided polygon are in AP.is 100 the smallest angle in this sequence.justify your answer

Subject: Maths, asked on 12/1/19

Subject: Maths, asked on 12/1/19