In an A.P., if d = -4, n = 7, an = 4, then a is
6
7
20
28
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1
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The nth term of an A.P., the sum of whose n terms is Sn, is
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2
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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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3
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The sum of first five multiples of 3 is:
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4
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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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5
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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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6
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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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7
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If 18, a, b - 3 are in A.P. then a + b =
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8
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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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9
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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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10
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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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