What is the sum of the following series? -64, -66, -68, ......, -100
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What is the sum of the first 11 terms of an arithmetic progression if the 3rd term is -1 and the 8th term is 19?
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A piece of equipment cost a certain factory 6,00,000. If it depreciates in value, 15% the first year, 13.5% the next year, 12% the third year, and so on, what will be its value at the end of 10 years, all percentages applying to the original cost?
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3
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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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4
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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
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5
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If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then \(\frac{{{S_1}}}{{{S_2}}}\)
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What is the sum of the first 12 terms of an arithmetic progression if the first term is -19 and last term is 36?
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7
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The sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is
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8
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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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9
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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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10
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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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