The first and last term of an A.P. are a...

The first and last term of an A.P. are `aa n dl` respectively. If `S` is the sum of all the terms of the A.P. and the common difference is given by `(l^2-a^2)/(k-(l+a))` , then `k=` S (b) 2S (c) 3S (d) none of these

None of these

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MTG IIT JEE FOUNDATION-ARITHMETIC PROGRESSIONS -EXERCISE (MULTIPLE CHOICE QUESTION )(LEVEL 1 )

Find the sum to 200 terms of the series 1+4+6+5+11+6+"…."
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The first and last term of an A.P. are aa n dl respectively. If S is t...
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if ((b +c -a))/a,((c+a -b))/b, (( a+b -c))/c are in AP, prove that ...
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If 2a+3, (a+2), 2a+7 are in A.P., then the value of a is
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Which term of the A.P. 20,17,14 , "….." is first negative term ?
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The first ,second and last terms of an A.P. are repectively 4,7 and 31...
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If the sum of first p terms of an A.P. is equal to the sum of the firs...
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If the m^(t h) term of an A.P. is 1/n a n d\ t h e\ n^(t h)t e r m\ i ...
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The sum of first n odd natural numbers is
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If 3x , x+14, 3x+4 are in A.P. ., then the value of x is
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Find the sum of first 30 terms of an A.P. whose second term is 2 and ...
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The digits of a positive integer, having three digits, are in A.P. and...
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If four numbers in A.P. are such that their sum is 50 and the great...
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If the first, second and last term of an A.P. are a ,\ b and 2a res...
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Which term of the AP: 3, 15, 27, 39, . . . will be 132 more than its 5...
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Sum of n terms of the series sqrt(2)+sqrt(8)+sqrt(18)+sqrt(32)+\ dd...
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In an A.P., if common difference d = 3, then a(5)-a(7) is equal to
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