Login
Subject: Maths, asked on 21/7/17

If S1 ,S2 and S3 denote the sum of n terms of three A.Ps whose first terms are unity and common difference in H.P, prove that : n=[(2 S1 S3) -(S1 S2) -(S2 S3)]/(S1-2S2-S3)

Subject: Maths, asked on 21/7/17

Explain and solve.
EXAMPLE 23.  Find the sum of all possible products of first n natural numbers taken two by two.

Subject: Maths, asked on 21/7/17

Explain and solve:
EXAMPLE 10.  Find the sum of all the odd numbers, which are perfect squares between 50 and 10,000.

Subject: Maths, asked on 17/7/17

Solve this:

Subject: Maths, asked on 17/7/17

Sum of 1.3+3.5+5.7+.... n terms
 

Subject: Maths, asked on 17/7/17

If pth term of an A.P is a and qth term is b. Prove that sum of its (p+q) term is p+q/2[a+b+(a-b/p-q)]

Subject: Maths, asked on 17/7/17

If a,b,c are pth term,qth term and rth term respectively of an H.P,then ab(p-q)+bc(q-r)+ac(r-p) equal to

Subject: Maths, asked on 16/7/17

Solve this:

Subject: Maths, asked on 16/7/17

Question 6 please solve ASAP

Subject: Maths, asked on 16/7/17

Solve this:

Subject: Maths, asked on 13/7/17

Sum of the series :

1) 1+3+7+15+31+...to n terms 2) 1+5+11+19+29+...to n terms

Subject: Maths, asked on 13/7/17

If a,b,c,x are all real numbers and (a^2+b^2)(x^2) - 2b(a+c)x + (b^2+c^2)=0, prove that a,b,c are in G.P and x is their common ratio.

Subject: Maths, asked on 13/7/17

sum to n terms of following series:

1) 1+(1+2)+(1+2+3)...
2)1*3+3*5+5*7....

Subject: Maths, asked on 13/7/17

sum of three consecutive terms in H.P is 37 and sum of their reciprocal is 1/4. Find the numbers

Subject: Maths, asked on 11/7/17

Six harmonic means are inserted between 2 and 100. Find the 4th harmonic mean

910111213
What are you looking for?