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Find the indicated terms in each of the following sequences whose nth terms are: `a_n=5_n-4; a_(12)` and `a_(15)` `a_n=(3n-2)/(4n+5); a_7` and `a_8` `a_n=n(n-1); a_5` and `a_8` `a_n=(n-1)(2-n)(3+n); a_1,a_2,a_3` `a_n=(-1)^nn ; a_3,a_5, a_8`

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. Let a sequence be defined by a1=1,a2=1 and an=a(n-1)+a(n-2) for al...

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  2. Find the next five terms of each of the following sequences given by: ...

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  3. Find the indicated terms in each of the following sequences whose nth ...

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  4. Write the first five terms of the sequence defined by an=(-1)^(n-1). 2...

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  5. Which term of the A.P. 3,10,17, ... will be 84 more than its 13th t...

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  6. Let sequence by defined by a1=3,an=3a(n-1)+1 for all n >1

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

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  8. Which term of the arithmetic progression 8,14,20,26, ... will be 72 ...

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  9. Find the term of the arithmetic progression 9,12,15,18, ... which is 3...

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  10. If the n^(t h) term of an A.P. is (2n+1), find the sum of first n term...

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  11. Two A.P’s have the same common difference. The difference between thei...

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  12. Find the 8th term from the end of the A.P. 7,10,13, ..., 184

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  13. Find the sum of all three digit natural numbers, which are divisible b...

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  14. If (a^(n+1)+b^(n+1))/(a^n+b^n) is the A.M. between a and b . Then, fin...

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  15. Find the number of integers between 50 and 500 which are divisible by ...

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  16. 150 workers were engaged to finish a piece of work in a certain number...

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  17. How many numbers of two digits are divisible by 7?

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  18. Along a road lie an odd number of stones placed at intervals of 10 met...

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  19. Divide 32 into four parts which are in A.P. such that the product of ...

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  20. Find the sum of first 30 terms of an A.P. whose second term is 2 and ...

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