warnar

This page lists questions and answers that were posted by visitors named warnar.

Questions

The following questions were asked by visitors named warnar.

The ratio of the fourth and 12th term of a g.p. With positive common ratio is 1:256. If the difference of two terms be 61.2, find the sum of 8 terms of this series.

find the sequence whose n th term is 1/3n-2. is this sequence an H.P.?

insert 6 g.m.s between 8/27 and -5 1/16.

if a is the g.m. of 2 and 1/4, then find a.

find the 7th terms of the series 1/3+8/23+4/11.....

find the n th term of the series 5/2+20/13+10/9+20/23..... .

find the fourth term of the series 4,5,6 2/3.

find the h.p. whose 6th term is 1 and 10th term is 5. find 15th term of the series also.

the arithmetic mean of two numbers exceeds the geometric mean by 3/2 and geometric mean excceeds the harmonic mean by 6/5. find the numbers.

n harmonic means have been inserted between 1 and 4 such that first meant:last mean=1:3,find n.

1.3+3.5+5.7+......to n terms. sir this question answer 1/3n(4n^2+6n-1)

find the sum of n arithmetic means between x and 3x. (answer 2nx)

1+ 1/1+2+ 1/1+2+3....to n terms.

(x^3+yx^3)xy=x^5-y^5

find the sum of the series,if the number of terms is infinite: 1/2.4+1/4.6/+1/6.8+1/8.10+.... sir answer 1/4

1.2.3.+2.3.5+3.4.7+...to n terms.

the sides of a right angled triangle are in a.p.,prove that they are in the ratio of 3,4,5.

the sum of four terms of an a.p. is 4 and the sum of product of first and last term and product of middle terms in -38, then find the numbes.

1.2.3+2.3.5+3.4.7+...to n terms

2+3+5+6+8+9+....+(3n-1)+(3n)

find the least value of n such that 2+5+8+11+....to n terms > 200.

find the sum of the series 1-2+3-4+5-6+...to n terms.

The cost of drilling a tubewell is ₨. 2.50 per foot for the first 100 feet and an additional Re. 0.25 for every subsequent foot. Find the cost of the last foot and the total cost of 220 feet deep tubewell.

Sri Ram paid ₨. 200 for a machine. At the end of 7th year it was valued at ₨.95. Assuming the yearly depreciation a constant amount. Find the annual depreciation.

Answers

The following answers were posted by visitors named warnar.

sir this question answer 2 and 12

answer 3 and 12

i don't understand please help me any other examples

sir answer this question 2n/n+1

5x^4-4x^3,y-y^4/x^4+4xy^3+5y^4 answer