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In a school students thought of planting...

In a school students thought of planting trees in and around the school to reduce air pollution. It was decided that the number of trees, that each section of each class will plant, will be the same as the class, in which they are studying, e.g.,

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. The sum of the third and the seventh terms of an AP is 6 and their ...

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  2. If (m+1)^(t h) term of an A.P. is twice the (n+1)^(t h) term, prove th...

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  3. In a school students thought of planting trees in and around the sc...

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  4. The sum of the first p , q , r terms of an A.P. are a , b , c respecti...

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  5. The ratio of the sum of n terms of two A.Ps is (7n+1):(4n+27)dot Find ...

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  6. If there are (2n+1) terms in A.P. , then prove that the ratio of the s...

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  7. Raghav buys a shop of Rs. 1,20,000. He pays half of the amount in cash...

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  8. Which term of the A.P. 3,15,27, 39, ... will be 120 more than its 21st...

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  9. The 17th term of an A.P. is 5 more than twice its 8th term. If the ...

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

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

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  12. The sum of three terms of an A.P. is 21 and the product of the first ...

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  13. The angles of a quadrilateral are in A.P. whose common difference is 1...

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  14. Consider the A.P. 2,5,8, 11 ,........ ,302. Show that twice of the mi...

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  15. For what value of n the n^(t h) terms of the following two A.Ps the s...

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  16. How many terms are there in the sequence 3,6,9, 12 ,.......... 111 ?

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  17. Find the middle term of the A.P. 6, 13 , 20 , ...... 216.

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  18. Show that the sequence 9,12,15,18,... is an A.P. Find its 16th term...

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  19. Which term of the sequence -1,3,7, 11 , ... is 95 ?

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  20. Write the sequence with nth terms: (i)an=3+4n (ii) an=5+2n (iii)an=6-...

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