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If the sum of m terms of an A.P. is equa...

If the sum of `m` terms of an A.P. is equal to the sum of either the next `n` terms or the next `p` terms, then prove that `(m+n)(1/m-1/p)=(m+p)(1/m-1/n)dot`

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To prove the statement given in the question, we will follow a systematic approach using the properties of Arithmetic Progressions (AP). ### Step-by-Step Solution: 1. **Understanding the Sums of Terms in an A.P.**: The sum of the first `m` terms of an A.P. can be given by the formula: \[ S_m = \frac{m}{2} \times (2a + (m-1)d) ...
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RD SHARMA-ARITHMETIC PROGRESSIONS-Solved Examples And Exercises
  1. If a ,b ,c are in A.P., prove that: i.(a-c)^2=4(a-b)(b-c) ii.a^2+c^2...

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  2. Find the sum of all those integers between 100 and 800 each of which o...

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  3. If the sum of m terms of an A.P. is equal to the sum of either the nex...

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  4. Suppose xa n dy are two real numbers such that the rth mean between xa...

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  5. The sum of two numbers is (13)/6dot An even number of arithmetic means...

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  6. The digits of a positive integer, having three digits, are in A.P. and...

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  7. If x ,y ,z are in A.P. and A1 is the A.M. of x and y and A2 is the A.M...

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  8. A man repays a loan of R s .3250 by paying R s .20 in the first month ...

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  9. If (b+c-a)/a ,(b+c-a)/b ,(a+b-c)/c , are in A.P., prove that 1/a ,1/b ...

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  10. If (b-c)^2,(c-a)^2,(a-b)^2 are in A.P., then prove that 1/(b-c),1/(c-a...

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  11. If a ,b ,c are in A.P., prove that 1/(b c),1/(c a),1/(a b), is al...

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  12. If a^2,b^2,c^2 are in A.P., then prove that the following are also in...

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  13. Two cars start together in the same direction from the same place. The...

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  14. Find an A.P. in which the sum of any number of terms is always three ...

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  15. If log2,log(2^x-1),log(2^x+3) are in A.P., write the value of xdot

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  16. The sums of first n terms of two A.P. ' s are in hte ratio (7n+2):(n+4...

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  17. Give first 3 terms of the sequence defined by an=n/(n^2+1)dot

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  18. First term of a sequence is 1 and (n+1)th term is obtained by adding (...

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  19. 1,4,7,10,is an A.P. whose first term is 1 and the common difference is...

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  20. 11, 7, 3, -1 is an A.P. whose first term is 11 and the common diffe...

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