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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If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers are
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How many terms are there in 20, 25, 30 . . . . . . 140?
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3
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In an A.P., if d = -4, n = 7, an = 4, then a is
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4
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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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5
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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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6
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The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?
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7
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If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:
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8
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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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9
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If the 7th term of a H.P. is 1/10 and the 12th term is 1/25, then the 20th term is
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10
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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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