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Find the sums given below :(i)7+10(1/2)+...

Find the sums given below :(i)`7+10(1/2)+14+…..+84`

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R G PUBLICATION-ARITHMETIC PROGRESSION-EXERCISE
  1. Find the sum of the following AP s:(iii)0.6,1.7,2.8,….to 100 terms

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  2. Find the sum of the following AP s:(iv)1/15,1/12,1/10,……to 12 terms.

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  3. Find the sums given below :(i)7+10(1/2)+14+…..+84

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  4. Find the sums given below :(ii)34+32+30+….+10

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  5. Find the sums given below :(iii)-5+(-8)+(-11)+…..+(-230)

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  6. In an AP:(i) given a=5,d=3,an=50,find n and Sn

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  7. In an AP:(ii) given a=7,a13=35,find d and S13.

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  8. In an AP:(iii) given a12=37,d=3,find a and S12.

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  9. In an AP:(iv)given a3=15,S10=125,find d and a10

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  10. In an AP:(v) given d=5,S9=75,find a and a9.

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  11. In an AP:(vi) given a=2,d=8,Sn=90,find n and an

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  12. In an AP:(vii) given a=8,an=62,Sn=210,find n and d

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  13. In an AP:(viii) given an=4,d=2,Sn=-14,find n and a.

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  14. In an AP:(ix)given a=3,n=8,S=192,find d.

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  15. In an AP:(x)given l=28,S=144,and there are total 9 terms.Find a.

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  16. How many terms of the AP:9,17,25,….. Must be taken to give a sum of 6...

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  17. The first term of an AP is 5,the last term is 45 and the sum is 400.Fi...

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  18. The first and last terms of an AP are 17 and 350 respectively.If the c...

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  19. Find the sum of first 22 terms of an AP in which d=7 and 22nd terms is...

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  20. Find the sum of first 51 terms of an AP whose second and third terms a...

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