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If the sum of n terms of an A.P. i...

If the sum of `n` terms of an A.P. is `S_n=3n^2+5n` . Write its common difference.

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
  1. Write the sum of first n odd natural numbers.

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  2. Write the sum of first n even natural numbers.

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  3. If the sum of n terms of an A.P. is Sn=3n^2+5n . Write its co...

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  4. Write the expression for the common difference of an A.P. whose fir...

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  5. First the term of an A.P is p and its common difference is q. Find its...

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  6. For what value of p are 2p+1,\ 13 ,\ 5p-3 are three consecutive ...

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  7. If 4/5,\ a ,\ 2 are three consecutive terms of an A.P., then find t...

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  8. If the sum of first p terms of an AP is ap^2+bp find the common differ...

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  9. If 7th and 13th terms of an A.P. be 34 and 64 respectively, then its...

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  10. If the sum of P terms of an A.P. is q and the sum of q ter...

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  11. The sum of n terms of an AP is 3n^2+nand its common difference is 6,th...

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  12. The first and last terms of an A.P. are 1 and 11. If the sum of its ...

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  13. If the sum of n terms of an A.P., is 3n^2+5n then which of its terms i...

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  14. If the sum of n terms of an A.P. is 2n^2+5n , then its n t h ...

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  15. If the sum of three consecutive terms of an increasing A.P. is 51 a...

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  16. If four numbers in A.P. are such that their sum is 50 and the great...

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  17. Let Sn denote the sum of n terms of an AP whose first term is a. If co...

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  18. If the first, second and last term of an A.P. are a ,\ b and 2a res...

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  19. If S1 is the sum of an AP of 'n' odd number of terms and S2 be the sum...

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  20. If in an A.P., Sn=n^2p and Sm=m^2p , where Sr denotes the sum of...

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