If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =
26
27
28
None Of This
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1
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For an A.P. if a25 - a20 = 45, then d equals to:
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2
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The sum of first five multiples of 3 is:
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3
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What is the sum of the first 17 terms of an arithmetic progression if the first term is -20 and last term is 28?
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4
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Let S denotes the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d = Sn – k Sn-1 + Sn-2 then k =
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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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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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7
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In an A.P., if d = -4, n = 7, an = 4, then a is
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8
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If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term 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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The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?
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