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If a(1/b +1/c) , b(1/c +1/a), c(1/a + 1/...

If `a(1/b +1/c) , b(1/c +1/a), c(1/a + 1/b)` are in A.P. Prove that a,b,c are in A.P.

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MODERN PUBLICATION-SEQUENCES AND SERIES-EXERCISE
  1. If a+b+c ne 0 and (b + c)/a, (c + a)/b, (a + b)/c are in A.P., prove ...

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  2. If a^(2),b^(2),c^(2) are in A.P. Prove that (a)/(b+c),(b)/(c+a),(c)/(a...

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  3. If a(1/b +1/c) , b(1/c +1/a), c(1/a + 1/b) are in A.P. Prove that a,b,...

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  4. Find 'r' and write the fourth term of the following progressions : ...

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  5. Find 'r' and write the next four terms of the following progressions :...

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  6. Find the 20th and nth terms of the G.P. 5/2,5/4,5/8,.....

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  7. Find the indicated term(s) of the following G.P.'s : 12, 8, 16/3, ……...

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  8. Which term of the geometric sequences : 2, 8, 32, is 131072 ?

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  9. Which term of the following sequence:- sqrt3,3,3sqrt3,....is 729?

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  10. Which term of the following sequence:- 1/3,1/9,1/27,.....is 1/19683 ?

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  11. For what values of x, the numbers -2/7,x, -7/2 are in G.P.?

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  12. In a G.P., the third term is 24 and the 6th term is 192. Find the 10th...

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  13. In a G.P., the third term is 24 and the 6th term is 192. Find the 8th ...

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  14. Find the 12th term of a G.P. whose 8th term is 192 and the common rati...

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  15. The first term of a G.P. is 1. The sum of the third term and fifth ter...

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  16. The 4th term of a G.P. is square of its second term, and the first ter...

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  17. The 4th term of a G.P. is square of second term and first term is -3. ...

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  18. The 4th, 7th and 10th terms of a GP. are a, b, c respectively. Show th...

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  19. The 5th, 8th and 11th terms of a G.P. are p, q and x, respectively. Sh...

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  20. If the 4th, 10th and 16th terms of a G.P. are x, y and z, respectively...

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