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OBJECTIVE RD SHARMA ENGLISH-SEQUENCES AND SERIES-Chapter Test
- If Sn denotes the sum of n terms of an A.P. whose common difference is...
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- The sides of a right angled triangle are in A.P., then they are in the...
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- Find the sum of all the 11 terms of an AP whose middle most term is 30...
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- The maximum sum of the series 20+19 1/3+18 2/3+ is 310 b. 300 c. 0320 ...
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- If three numbers are in G.P., then the numbers obtained by adding the ...
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- If p ,q ,r are in A.P., show that the pth, qth and rth terms of any G....
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- Let a,b,c be three positive prime number. The progrrssion in which sqr...
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- If 1/(b-a)+1/(b-c)=1/a+1/c , then (A). a ,b ,a n dc are in H.P. (B). a...
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- If three numbers are in H.P., then the numbers obtained by subtracting...
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- The first three of four given numbers are in G.P. and their last three...
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- In a G.P. of positive terms if any terms is equal to the sum of next ...
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- If a,b,c are in H.P and ab+bc+ca=15 then ca=
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- If sum(r=1)^(oo)(1)/((2r-1)^(2))=(pi^(2))/(8), then sum(r=1)^(oo) (1)/...
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- It is given that 1/1^4 + 1/2^4 +1/3^4 … to oo= pi^4/90 , then 1/1^4...
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- The minimum number of terms from the beginning of the series 20+22(2)/...
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- The sum of the series 1-3+5-7+9-11+ . . . . To n terms is
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- If three positive unequal numbers a, b, c are in H.P., then
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- If the fifth term of a G.P. is 2, then write the product of its 9 t...
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- 1^3-2^3+3^3-4^3+........+9^3 is equal to
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- The sum of infinite number of terms in G.P. is 20 and the sum of their...
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