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The sum of 5th and 9th term of an A.P. i...

The sum of 5th and 9th term of an A.P. is 72 and the sum of 7th and 12th terms is 97 . Find that

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. If the numbers a , b , c , d , e form an A.P. , then find the value of...

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  2. The 9th term of an A.P. is equal to 6 times its second term. If its...

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  3. The sum of 5th and 9th term of an A.P. is 72 and the sum of 7th and...

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  4. The sum of 4th and 8th terms of an A.P. is 24 and the sum of 6th an...

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  5. Write an AdotPdot having 4 as the first term and -3 as the comon diffe...

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  6. Write the first three terms in each of the sequence defined by the ...

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  7. What is 18th term of the sequence defined by an=(n(n-3))/(n+4)

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  8. Show that the sequence defined by an=4n+5 is an AdotPdot Also, find...

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  9. Show that the sequence defined by an=2n^2+1 is not an AdotPdot

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  10. Show that a sequence is an AdotPdot if its n t h term is a linea...

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  11. The n t h term of a sequence is 3n-2 . Is the sequence an AdotPd...

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  12. Write an AdotPdot whose first term is 10 and common difference is 3...

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  13. Write an AdotPdot whose first term and common difference are -1. 25...

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  14. Number of students left in the school auditorium from the total str...

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  15. The amount of money in the account every year, when Rs 10000 is deposi...

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  16. Find the common difference and write the next three terms of the Ad...

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  17. For the following arithmetic progressions write the first term a an...

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  18. For the following arithmetic progressions write the first term a an...

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  19. Write the arithmetic progression when first term a and common diff...

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  20. The cost of digging a well for the first metre is Rs 150 and rises b...

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