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Find the 20th term of the AP whose 7th t...

Find the 20th term of the AP whose 7th term is 24 less than the 11th term, first term being 12.

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OSWAL PUBLICATION-ARITHMETIC PROGRESSIONS -NCERT EXAMPLAR (EXERCISE-5.3)
  1. The 26th, 11th and last term of an A.P. are 0,3,-1/5respectively. Find...

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  2. The sum of the 5 ^(th) and the 7^(th) terms of an A.P. is 52 and then ...

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  3. Find the 20th term of the AP whose 7th term is 24 less than the 11th t...

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  4. If the 9^(th) term of an A.P. is zero, then prove that 29^(th) term is...

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  5. Find whether 55 is a term of the AP 7, 10, 13, … or not. If yes, find ...

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  6. Determine k, so that K^(2)+4k+8, 2k^(2)+3k+6 and 3k^(2)+4k+4 are three...

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  7. Split 207 into three parts such that these are in AP and the product o...

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  8. The angles of a triangle are in A.P. The greatest angle is twice the l...

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  9. If the nth terms of the two AP's 9, 7, 5, … and 24, 21, 18, … are the ...

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  10. If sum of the 3 ^(rd) and the 8^(th) terms of A.P. is 7 and the sum of...

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  11. Find the 12th term from the end of the AP-2, -4, -6, …, -100.

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  12. Which term of the AP 53, 48, 43, … is the first negative term ?

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  13. How many numbers lie between 10 and 300, which divided by 4 leave a re...

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  14. Find the sum of two middle terms of the AP -4/3,-1,-2/3,-1/3,...,4(1/3...

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  15. The first term of an AP is -5 and the last term is 45. If the sum of t...

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  16. Find the sum : 1+1.2+1.4+1.6+1.8+... (upto 21 terms)

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  17. Find: (4-1/n)+(7-2/n) +(10-3/n) ... upto n terms

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  18. Find the sum (i) 1+(-2)+(-5)+(-8)+ … +(-236) (ii) (4-(1)/(n))+(4-(...

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  19. Which term of the AP -2,-7,-12, … will be -77 ? Find the sum of this A...

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  20. If a(n)=3-4n, then show that a(1),a(2),a(3), … form an AP. Also, find ...

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