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NEW JOYTHI PUBLICATION-SEQUENCES AND SERIES -QUESTIONS FROM COMPETITIVE EXAMS
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- The sets S(1), S(2), S(3), …………. are given by S(1) = {2/1},S(2) = {3/2...
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- If H(1), H(2) are two harmonic means between two positive numbers a an...
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- If the sum of 12^(th) and 22^(nd) terms of an A.P is 100, then the sum...
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- The coefficient of x in the expansion of (1 + x)(1 + 2x)(1 + 3x) ... ...
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- If 0 lt phi lt (pi)/(2) , x= sum(n=0)^(oo) cos^(2n) phi ,y sum (n...
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- The sum of the first n terms of the series 1/(sqrt(2) + sqrt(5)) + 1/(...
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- The H.M. of two numbers is 4. their A.M ia A and G.M. is G. If 2A + G^...
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- If a, b, c are in G.P. and x, y are the arithmetic mean of a, b and b,...
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- A student read common difference of are A.P. as -3 instead of 3 and ob...
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- If a(1), a(2) …… a(n) = n a(n - 1), for all positive integer n gt= 2, ...
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- If a(1), a(2), ……., a(n) are in A.P. with common differece d != 0, the...
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- Let a be a positive number such that the arithmetic mean of a and 2 e...
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