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If the sum of n terms of an A,Pis given ...

If the sum of n terms of an A,Pis given by `S_(n) =3n+2n^(2)` then the common difference of the A.P. is

A

A. 3

B

B. 2

C

C. 6

D

D. 4

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D
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ICSE-SEQUENCES AND SERIES-MULTIPLE CHOICE QUESTIONS
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  9. Let a,b,c be in A.P. If p is the A.M. between a and b and q is the A.M...

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  10. If the ratio of second to seventh of n A.M.'s between -7 and 65 is 1:7...

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  11. In a G.P first term is 3/4, common ratio is 2 and the last term is 384...

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  12. The first and second terms of a G.P are x^(-4) and x^(m) respectively....

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  13. If the first term of a G.P is 27 and 8th term is 1/81, then the sum of...

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  14. The product of 5 terms of G.P. whose 3rd term is 2 is

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  15. If 3rd, 8th and 13th terms of a G.P are p ,q and r respectively, then ...

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  17. How many two digit numbers are divisible by 4?

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  18. A G.P consists of 200 terms. If the sum of odd terms of G.P is m and s...

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  19. If an infinite G.P. has the first term a and the sum 5, then which one...

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