If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term is :
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What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?
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2
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Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
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3
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Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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5
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If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?
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6
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The 2nd and 8th term of an arithmetic progression are 17 and 1 respectively. What is the 14th term?
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7
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The first and last term of an A.P. is a and l respectively. If S is the sum of all the terms of the A.P. and the common difference is given by \(\frac{{{l^2}  {a^2}}}{{k  \left( {l + a} \right)}}\) then k = ?
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8
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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9
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If the fifth term of a GP is 81 and first term is 16, what will be the 4th term of the GP?
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10
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The 3rd and 8th term of an arithmetic progression are 13 and 2 respectively. What is the 14th term?
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