If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
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1
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For A.P. T18 - T8 = ........ ?
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2
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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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3
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The sum of first five multiples of 3 is:
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4
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What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?
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5
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If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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6
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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7
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The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is
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8
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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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9
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If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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10
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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