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The sum of three numbers which are conse...

The sum of three numbers which are consecutive terms of an A.P. is 21. If the second number is reduced by 1 and the third is increased by 1 we obtain three consecutive terms of a G.P. Find the numbers.

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RD SHARMA ENGLISH-GEOMETRIC PROGRESSIONS-All Questions
  1. Find k such that k+9,\ k-6 and 4 form three consecutive terms of a G.P...

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  2. Three numbers are in A.P. and their sum is 15. If 1,3,9 be added to ...

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  3. The sum of three numbers which are consecutive terms of an A.P. is 21....

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  4. The sum of three numbers in G.P. is 56. If we subtract 1,7,21 from the...

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  5. If a ,\ b\ c are in G.P., prove that the following are also in G.P.: a...

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  6. If a ,\ b\ c are in G.P., prove that the following are also in G.P.: a...

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  7. If a, b, c are in G. P., prove that a^2+ b^2, ab + bc, b^2 +c^2 are al...

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  8. If (a-b),\ (b-c),(c-a) are in G.P. then prove that (a+b+c)^2=3(a b+b c...

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

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  10. If a, b, c are in A.P and a, b, d are in G.P, prove that a, a -b, d ...

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  11. If the pth, qth, rth, and sth terms of an A.P. are in G.P., t hen p-q ...

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  12. If a ,\ b ,\ c are in A.P. b ,\ c ,\ d are in G.P. and 1/c ,1/d ,1/e a...

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  13. If a, b, c are in A.P and a, b, d are in G.P, prove that a, a -b, d ...

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  14. If p^(t h),\ q^(t h),\ a n d\ r^(t h) terms of an A.P. and G.P. are bo...

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  15. Find two numbers whose arithmetic mean is 34 and the geometric mean is...

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  16. If A.M. and G.M. between two numbers is in the ratio m : n then prove...

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  17. a,b,c are positive real numbers forming a G.P. ILf ax^2+2bx+c=0and ...

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  18. Q. If a, b,c and d are distinct positive no. in AP. then (A) ad lt ...

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  19. Insert 6 geometric means between 27 and 1/(81)dot

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  20. Insert 5 geometric means between 16 and 1/4dot

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