The sum of first five multiples of 3 is:
90
72
55
45
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1
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If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
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2
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In an A.P., if d = 4, n = 7, an = 4, then a is
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3
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The 3rd and 6th term of an arithmetic progression are 13 and 5 respectively. What is the 11th term?
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4
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Let S denotes the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d = S_{n} – k S_{n1} + S_{n2} then k =
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5
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If log 2, log (2^{x} 1) and log (2^{x} + 3) are in A.P, then x is equal to ___
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6
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How many 2digit positive integers are divisible by 4 or 9?
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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 = ?
Solution 
8
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Find the n^{th} term of the following sequence :
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9
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The 3rd and 7th term of an arithmetic progression are 9 and 11 respectively. What is the 15th term?
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10
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If sum of n terms of an A.P. is 3n^{2} + 5n and T^{m} = 164 then m =
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