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Let a1,a2,a3,.......a11 be real number s...

Let `a_1,a_2,a_3,.......a_11` be real number satisfying `a_1=15,27-2a_2gt0 anda_k=2a_(k-1)-a_(k-2) ` for k=3,4,.....11. If `(a_1^2+a_2^2+......a_11^2)/11=90,` then the value of `(a_1 +a_2+.....a_11)/11` is equal to

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CENGAGE PUBLICATION-SEQUENCES AND SERIES-All Questions
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  2. The 15th term of the series 2 1/2+1 7/(13)+1 1/9+(20)/(23)+.... i s (...

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  3. Let a1,a2,a3,.......a11 be real number satisfying a1=15,27-2a2gt0 anda...

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  4. The coefficients of x^n in (1+x/(1!)+x^2/(2!)+……+x^n/(n!))^2 is

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  6. Find the conjugate of the following: sqrt (-3)

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  7. The x=1111....1 of 91 times of is a (a) Even number. (b) Prime numbe...

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  8. Which term of the AP 64, 60, 56, 52, 48 ,.... is 0 .

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  9. Statement 1: Sum of the series 1^3-2^3+3^3-4^3++11^3=378. - Statement ...

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  10. Statement 1: 1^(99)+2^(99)++100^(99) is divisible by 10100. Statement...

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  11. Find the nth term of the AP 8, 3, -2, -7, -12,....

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

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

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

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  16. 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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  17. Find the sum of odd intergers from 1 to 201.

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

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