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PATHFINDER-PROGRESSION AND SERIES -QUESTION BANK
- Sum of n terms of the series 8+88+888+....equals
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- The sum of the first n terms of the series 1^2+2.2^2+3^2+2.4^2+5^2+2.6...
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- The sum of integer in between 1 to 100 which is divisible by 2 or 5 is
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- 1/2+3/4+7/8+15/16+..... t o n terms =
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- 0ltthetaltpi/2, if x=sum(n=0)^inftycos^(2n)theta,y=sum(n=0)^inftysin^(...
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- If x in{1,2,3......9} and fn(x) =x x x ...x (n digits ), then fn^2(3)+...
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- Four no. are in AP . If their sum is 20 and the sum of their squares i...
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- Sum of n terms of series 1.3+3.5+5.7+....is
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- If the sum of an infinitely decreasing GP is 3, and the sum of the squ...
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- 1+2.2+3.2^2+4.2^3+....100.2^99 equals
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- If A1,A2 be two AM's and G1,G2 be the two GM's between two number a an...
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- If H1,H2,H3,.......Hn be n harmonic means between a and b then (H1+a)...
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- If a,b,c are in AP and a^2,b^2,c^2 are in HP, then
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- If between 1 and 1/31 there are n H.M's and ratio of 7th and (n-1)^th ...
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- (a^(n+1)+b^(n+1))/(a^n+b^n) is AM/GM/HM, between a and b if n is equal...
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- Sum of infinite terms of series 3+5. 1/4+7. 1/4^2+..... is
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- The value of x for which 1/(1+sqrtx),1/(1-x),1/(1-sqrtx) are in AP li...
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- If the non-zero numbers a,b,c are in AP and tan^-1a,tan^-1b,tan^-1c ar...
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- If a,b,c,d are distinct positive numbers in AP, then
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- If sum(r=1)^nr(r+1)(2r+3)=an^4+bn^3+cn^2+dn+e, then
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