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The sums of first n terms of two A.P. ' ...

The sums of first `n` terms of two A.P. `' s` are in hte ratio `(7n+2):(n+4)dot` Find the ratio of their `5t h` terms.

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. Find an A.P. in which the sum of any number of terms is always three ...

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

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

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

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  5. Find the first four terms of the sequence whose first term is 1 and ...

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  6. 1,4,7,10,is an A.P. whose first term is 1 and the common difference is...

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

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  8. The nth term of a sequence is 3n-2 is the sequence an A.P.? If so, fin...

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  9. If the nth term an\ of a sequence is given by an=n^2-n+1 write down i...

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  10. A sequence is defined by an=n^3-6n^2+11 n-6. Show that the first three...

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  11. Find the first four terms of the sequence defined by a1=3\ a n d\ an=3...

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  12. Write the first five terms in each of the following sequence: a1=1,\ a...

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  13. Write the first five terms in each of the following sequence: a1=1=\ a...

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  14. Write the first five terms in each of the following sequence: a1=a2=2,...

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  15. The Fibonacci sequence is defined by a1=1=a2,\ an=a(n-1)+a(n-2) for n ...

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  16. Show that each of the following sequences is an A.P. Also, find the ...

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  17. Show that each of the following sequences is an A.P. Also, find the ...

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  18. The nth term of a sequence is given by an=2n^2+n+1. Show that it is no...

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  19. Show that the sequence 9,12,15,18,... is an A.P. Find its 16th term...

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  20. Which term of the sequence 4,9,14,19…. is 124?

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