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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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The correct Answer is:
D
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-ARITHMETIC PROGESSION -PRACTICE SET 3.4
  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. The 21st term of an AP whose first two terms are -3 and 4, is

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

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  7. The sum of first five multiples of 3 is

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  8. The sum of the first ten terms of the A.P.15,10,5,….is……

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  9. The sum of an A.P. is 1 and the nth term is 20. If S(n)=399, then n=…....

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

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  11. The sun of the 5th and the 7th terms of an AP is 52 and the 10th term ...

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  12. Find the sum of the first ten terms of the A.P. whose 4th term is -15 ...

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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 the 3rd and the 8th terms of an AP is 7 and the sum of the 7...

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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 AP whose first term is a, the second term b an...

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  20. The sum of first p- terms terms of an A.P. is q and the sum of first q...

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