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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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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2
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Find the 15th term of the sequence 20, 15, 10 . . . . .
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3
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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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4
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The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, the number of terms is
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5
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What is the sum of all positive integers up to 1000, which are divisible by 5 and are not divisible by 2?
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6
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Find the nth term of the following sequence :
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7
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How many 2-digit positive integers are divisible by 4 or 9?
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8
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Find the nth term of the following sequence :
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9
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What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?
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10
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If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =
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