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If the nth term of the A.P. 9,7,5,... is...

If the nth term of the A.P. 9,7,5,... is same as the nth term of the A.P. 15,12,9,.. find `ndot`

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. The 10th and 18th terms of an A.P. are 41 and 73 respectively. Find...

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  2. In certain A.P. the 24th term is twice the 10th term. Prove that th...

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  3. If the nth term of the A.P. 9,7,5,... is same as the nth term of the A...

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  4. Find the 12th term from the end of the following arithmetic progres...

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  5. Find the 12th term from the end of the following arithmetic progres...

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  6. Find the 12th term from the end of the following arithmetic progres...

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  7. Find the second term and nth term of an A.P. whose 6th term is 12 a...

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  8. How many numbers of two digit are divisible by 3?

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  9. An A.P. consists of 60 terms. If the first and the last terms be 7 and...

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

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  11. The first and the last terms of an A.P. are a\ a n d\ l respectively. ...

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  12. The sum of three numbers in A.P. is -3, and their product is 8. Find t...

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  13. Find the four numbers in A.P. whose sum is 20 and the sum of whose ...

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  14. Find the four numbers in A.P., whose sum is 50 and in which the greate...

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  15. Find the four numbers in A.P., whose sum is 50 and in which the greate...

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  16. If the sum of three numbers in A.P. is 24 and their product is 440, ...

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  17. Find the sum of 20 terms of the A.P. 1,4,7,10…..

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  18. Find the sum of the series : 5+13+21++181.

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  19. Find the sum of all three digit natural numbers, which are divisible b...

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  20. Find the sum of all odd integers between 2 and 100 divisible by 3

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