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CENGAGE ENGLISH-SEQUENCES AND SERIES-All Questions
- If a ,b ,c are in A.P. and a^2, b^2, c^2 are in H.P., then prove tha...
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- Let a ,b be positive real numbers. If a, A1, A2, b be are in arithmeti...
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- The sum of an infinite G.P. is 57 and the sum of their cubes is 9747, ...
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- If a^2+b^2,a b+b c and b^2+c^2 are in G.P., then a ,b ,c are in a. A.P...
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- If y^2=x za n da^x=b^y=c^z , then prove that (log)6a=(log)c bdot
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- The geometric mean between -9 and -16 is 12 b. -12 c. -13 d. none of t...
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- The value of 0.2
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- If (1+a)(1+a^(2))(1+a^(4)) . . . . (1+a^(128))=underset(r=0)overset(n)...
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- The number of terms common between the series 1+2+4+8+ .......to 100 t...
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- After striking the floor, a certain ball rebounds (4/5)th of height ...
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- If S denotes the sum to infinity and Sn the sum of n terms of the seri...
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- The first term of an infinite geometric series is 21. The second term ...
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- Given that x+y+z=15 when a ,x ,y ,z ,b are in A.P. and 1/x+1/y+1/z=5/3...
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- Let a1,a2,a3…… ,an be in G.P such that 3a1+7a2 +3a3-4a5=0 Then common...
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- The consecutive digits of a three digit number are in G.P. If middle ...
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- If Sn=1^2-2^2+3^2-4^2+5^2-6^2+ ,t h e n S(40)=-820 b. S(2n)> S(2n+2) ...
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- If sum(r=1)^n r(r+1)(2r+3)=a n^4+b n^3+c n^2+d n+e , then (a) a-b=d-c ...
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- Find the sum off the terms of an infinite decreasing G.P. in which all...
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- If a,x,b are in A.P.,a,y,b are in G.P. and a,z,b are in H.P. such that...
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- If a,b, and c are in G.P then a+b,2b and b+ c are in
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