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In an A.P, the 5th and 12th terms are 30...

In an A.P, the `5th` and `12th` terms are `30` and `65` respectively. What is the sum of the first `20` terms?

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CHETANA PUBLICATION-Arithmetic Progression-EXERCISE
  1. How many two digit natural numbers are divisible by 5?

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  2. Obtain the sum of 56 terms of an A.P whose 19th and 38th term are 52 a...

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  3. In an A.P, the 5th and 12th terms are 30 and 65 respectively. What is ...

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  4. Split 69 in three parts such that they are in A.P and product of two s...

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  5. The first and the last terms of an A.P are 17 and 9. If common differe...

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  6. Find four consecutive terms in an A.P such that the sum of the middle ...

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  7. Find three consecutive terms in an A.P whose sum is -3 and the product...

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  8. How many terms of the A.P: 9,17,25,…. must be taken to give a sum of 6...

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  9. Find the sum of all natural numbers between 100 and 1000 which are mul...

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  10. A meeting hall has 20 seats in the first row, 24 seats in the second r...

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  11. In winter, the temperature at a hill station from Monday to Friday is ...

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  12. Neeta saves in a Mahila Bachat Gat ₹2 on the first day, ₹4 on the seco...

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  13. Mr. Shah borrows ₹4000 and agrees to repay with a total interest of ₹5...

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  14. A farmer borrows ₹1000 and agrees to repay with a total interest of ₹1...

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  15. The sequence -10,-6,-2,2,…… a)is an A.P, Reason d=-16 b)is an A.P, Rea...

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  16. Sum of first five multiples of 3 is…. a)45 b)55 c)15 d)75

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  17. For an A.P.: 2,-2,-6,-10,…. find d. a)-4 b)2 c)4 d)1

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  18. For an A.P, if a=-3 and d=4, then find tn.

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  19. Determine whether following sequence is an A.P : 2,-2,-6,-10,….

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  20. In an A.P, a=6 and d=3. Then find S27.

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