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The sum of three consecutiveterms of an ...

The sum of three consecutiveterms of an AP is 21, and the sum of the squares of thesetrems is 165. Find these terms.

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The sum of three consecutive numbers in G.P. is 21 and the sum of their squares is 189. Find the numbers.

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CENGAGE PUBLICATION-SEQUENCES AND SERIES-All Questions
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  2. Find the nth term of the AP 8, 3, -2, -7, -12,....

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  3. The sum of three consecutiveterms of an AP is 21, and the sum of the s...

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  4. Let a1 , a2 , a3,.... be terms of an A.P. if (a1 + a2 +....+ ap)/(a1 +...

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  5. Consider an A.P. a1, a2, a3,......... such that a3+a5+a8=11 and a4+a2...

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  6. If the sum of n terms of an A.P is cn (n-1) where c ne 0 then find the...

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  7. If |a|<1a n d|b|<1, then the sum of the series 1+(1+a)b+(1+a+a^2)b^2+(...

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  8. Find the sum of odd intergers from 1 to 201.

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  9. If a1, a2, a3(a1>0) are three successive terms of a G.P. with common r...

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  10. Three numbers form an increasing G.P. If the middle number is doubled,...

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  11. If S1,S2, S3, Sm are the sums of n terms of m A.P. ' s whose first ter...

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  12. If S1,S2 and S3 be respectively the sum of n, 2n and 3n terms of a G.P...

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  13. There are 4n + 1 terms in a sequence of which first 2n + 1 are in Arit...

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  14. If (p+q)t h term of a G.P. is a and its (p-q)t h term is b where a ,b ...

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  15. Find the sum of n terms of the series whose nth term is T(n)=tanx/(2^n...

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  16. Evaluate, sum(i = 0)^iinfty sum(j = 0)^infty sum(k = 0)^infty 1/(3^i c...

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  17. The first trem of a GP is -3 and the square of the second term is equa...

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  18. If log(2)(5.2^(x)+1),log(4)(2^(1-x)+1) and 1 are in A.P,then x equals

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  19. Find the geometric series whose 5th and 8th terms are 80 and 640 respe...

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  20. 0ltthetaltpi/2, if x=sum(n=0)^inftycos^(2n)theta,y=sum(n=0)^inftysin^(...

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