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If 7th and 13th terms of an A.P. be 34...

If 7th and 13th terms of an A.P. be 34 and 64 respectively, then its 18th term is
(a) 87        (b) 88        (c) 89          (d) 90

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RD SHARMA ENGLISH-ARITHMETIC PROGRESSIONS-All Questions
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  2. If the sum of first p terms of an AP is ap^2+bp find the common differ...

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

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

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

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

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

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

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

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

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

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

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

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

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  15. Let Sn denotes the sum of the first of n terms of A.P. and S(2n)=3Sn ...

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  16. in an AP , Sp=q , Sq=p and Sr denotes the sum of the first r terms. Th...

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  17. If Sr denotes the sum of the first r terms of an A.P. Then, S(3n...

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  18. If the first term of an A.P. is 2 and common difference is 4, then ...

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  19. The number of terms of the A.P. 3,\ 7,\ 11 ,\ 15 ,\ ddot to be take...

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  20. Sum of n terms of the series sqrt(2)+sqrt(8)+sqrt(18)+sqrt(32)+\ dd...

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