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Find S15, if for an A.P. a=10 and d=3....

Find S_15, if for an A.P. a=10 and d=3.

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Find S_3 for the A.P. 3,5,7,9,….

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NAVNEET PUBLICATION-ARITHMETIC PROGRESSION-EXERCISE
  1. How many two -digit numbers are there divisible by 3?

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  2. Find tn for the A.P. 3,8,13,18,…

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  3. Is the sequence -10,-4,2,8,… an A.P.? Find the 31st term,if it is an A...

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  4. Find the value of t7+t9 for the A.P. 7,13,19,25,...

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  5. Which term of the A.P. 50,40,30,20,…. Is the number -940?

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  6. Find S15, if for an A.P. a=10 and d=3.

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  7. Find S10, for an A.P. 0,1/6,1/3,….

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  8. The sum of the 3rd and 7th terms of an A.P. is 6 and their product is ...

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  9. Find the sum of all natural numbers between 1 and 145 which are divisi...

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  10. Find S30, if the first term of an A.P. is 10 and the common difference...

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  11. Sachin invested some amount in National Savings certificates in a spec...

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  12. Find the sum of the first 100 terms of the A.P. 12,14,16,18,….

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  13. Open ended question : Write an A.P. in which a=10 and d is any positi...

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  14. Amit saves certain amount every month in a specific way in the first m...

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  15. If the 9th and 21st terms of an A.P. are 75 and 183 respectively, find...

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  16. Find the sum of even numbers between 1 to 300.

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  17. The sum of 45 terms of an A.P. is 3195. Find its 23rd term.

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  18. The sum of three consecutive terms of an A.P. is 30 and their product ...

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  19. The sum of four consecutive terms of an A.P. is 2. The sum of the 3rd ...

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  20. One person borrows Rs 4000 and agrees to repay with a total interest o...

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