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NEW JOYTHI PUBLICATION-SEQUENCES AND SERIES -QUESTIONS FROM COMPETITIVE EXAMS
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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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- If the sum to first n terms of the A.P. 2, 4, 6, …. is 240, then the v...
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- The value of 1/(sqrt(10) - sqrt(9)) - 1/(sqrt(11) - sqrt(10)) + 1/(sqr...
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- An A.P. consists of 23 terms. If the sum of the three terms Is the mid...
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- If a(1), a(2), a(3), ......... , are in A.P. with common difference 5 ...
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- The sum of all two digit natural numbers which leave a remainder 5 whe...
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- If the 9^(th) term of A.P. is zero, then the ratio of 29^(th) term to ...
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- Let S(1), S(2), ...... S(101) be consecutive terms of A.P. If 1/(S(1)S...
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- If a(1), a(2), a(3), ……. , a(n) are in A.P. and a(1) = 0, then the val...
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- The value of 1^(2) - 2^(2) + 3^(2) - 4^(2) + ….. + 11^(2) is equal to
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