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For an A.P. if t(7)=4.d=-4.then a=….....

For an A.P. if `t_(7)=4.d=-4`.then `a=…..`

A

`6`

B

`7`

C

`20`

D

`28`

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UNIQUE PUBLICATION-ARITHMETIC PROGRESSION-Problem Set 3
  1. The first four terms of an Ap whose first term is -2 and the common di...

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  2. What is the sum of the first 30 natural numbers?

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  3. For an A.P. if t(7)=4.d=-4.then a=…..

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  4. For an A.P. if a=3.5,d=0,n=101, then t(n)=….

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  5. In an A.P. first two terms are -3,4 then 21^(st) term is………

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  6. If for an A.P.,d=5, then t(18)-t(13)=….

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  7. Sum of first five multiples of 3 is……….

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  8. 15,10,5…..In this A.P. sum of first 10 terms is….

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  9. In an A.P., 1^(st) terms is 1 and the last term is 20. The sum of all ...

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  10. The 4th term from the end of an AP -11, -8, -5, …, 49 is

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  11. In an A.P. 10^(th) term is 46, sum of 5^(th) and 7^(th) term is 52. fi...

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  12. The A.P. in which 4^(th)term -15 and 9^(th) term is -30. Find the sum ...

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  13. Two A.P's are given 9,7,5..and 24,21,18,….If n^(th)term of both the pr...

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

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  15. In an A.P., first term is -5 and last term is 45. If sum of all the nu...

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  16. Sum of 1 to n natural numbers is 36, then find the value of n.

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  17. Split 207 into three parts such that these are in A.P. and the product...

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  18. An AP consists of 37 terms. The sum of the three middle most terms is ...

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  19. Show that the sum of an A.P. whose first term is a, the second term is...

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  20. The sum of first P terms of an A.P. is equal to the sum of its first Q...

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