How many terms of the AP 26,21,16,11,…. ...

How many terms of the AP 26,21,16,11,…. Ar needed to give the sum the sum 11 ?

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The correct Answer is:

11

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RS AGGARWAL-ARITHMETIC PROGRESSION-Exercise 11B

find the value of x such that 1+4+7+10+….+x = 715
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Find the value of x such that 25+22+19+16 +….+ x=112
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Find the rth term of an AP, the sum of whose first n terms is (3n^(2) ...
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find the sum of n terms of an AP whose rth term is ( 5r+1)
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if the sum of certain number of terms of the AP 27,24,21,18,…., is -30...
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How many terms of the AP 26,21,16,11,…. Ar needed to give the sum the ...
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How many terms of the AP 18,16,14,12 ,….. Are needed to given the sum ...
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How many terms of the AP 20,19""1/3,18""2/3,…., must be taken to make ...
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The sums of n terms of two arithmetic progressions are in the ratio (7...
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IF the ratio between the sums of n terms of two arithmetic progression...
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Find the sum of all even integers between 101 and 199.
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Find the sum of all integers between 101 and 500, which are divisible...
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Find the sum of all natural numbers from 1 and 100 which are divisble ...
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If the sum of n terms of an A.P. in n P" "+1/2n(n-1)Q , where P and...
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If S(m)=m^(2) p and S(n)=n^(2)p, where m ne n in an AP then prove tha...
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A carpenter was hired to build 192 window frames. The first day he mad...
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