The sum of first n odd natural numbers in
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1
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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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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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If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is
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4
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What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?
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5
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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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6
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What is the sum of the following series? -64, -66, -68, ......, -100
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7
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The 3rd and 8th term of an arithmetic progression are -13 and 2 respectively. What is the 14th term?
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8
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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9
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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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10
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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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