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Choose the correct alternative: The fi...

Choose the correct alternative:
The first term of an A.P. is `1` and `nth` term is `25`. If `S_n=520`, then `n=….`

A

(a) `45`

B

(b) `30`

C

(c) `50`

D

(d) `40`

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NAVNEET PUBLICATION-ARITHMETIC PROGRESSION-EXERCISE
  1. Choose the correct alternative from those given below each question: ...

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  2. Choose the correct alternative from those given below each question: ...

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  3. Choose the correct alternative: The first term of an A.P. is 1 and n...

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  4. Find the first terem of the sequence: tn=3n+1

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  5. Find the first terem of the sequence: tn1/n^2-1

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  6. Find the first terem of the sequence: tn=4n-3

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  7. Write the next two terms of an A.P. , if a=11 and d=2.

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  8. Find the second and third terms of an A.P. whose first term is -2 and ...

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  9. Find S3 for the A.P. 3,5,7,9,….

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  10. What is the 6th term of the sequence 3,5,8,12,17?

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  11. For the given A.P. write the values of a and d. 400,360,320,…

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  12. For the given A.P. write the values of a and d. 5,12,19,….

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  13. For the given A.P. write the values of a and d. 2,-2,-6,….

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  14. Write the 2nd and 3rd terms of the A.P., if a=10,d=5

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  15. Write the 2nd and 3rd terms of the A.P., if a=-12,d=-4

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  16. If for an A.P., d=20, what is the value of t6-t2?

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  17. What is the value of d for an A.P., if t3=12 and t7=36?

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  18. If for an A.P, the 1st term is 2 and the 10th term is 48, then what is...

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  19. For an A.P. 8 th term is 17. Write an equation relating a and d.

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  20. Write the two missing terms of the A.P., 12,19,26,……,40,…

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