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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If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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2
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If 18, a, b - 3 are in A.P. then a + b =
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3
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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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4
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The 7th and 21st terms of an AP are 6 and -22 respectively. Find the 26th term
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5
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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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6
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The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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7
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The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?
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8
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If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
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9
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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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10
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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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