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If log2,log(2^x-1),log(2^x+3) are in A....

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

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. Two cars start together in the same direction from the same place. The...

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

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

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

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

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

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

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  8. 11, 7, 3, -1 is an A.P. whose first term is 11 and the common diffe...

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

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

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

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

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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=1=\ a...

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

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

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

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

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

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

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