If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
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Find the nth term of the following sequence :
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2
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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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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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The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
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5
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If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be
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6
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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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7
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......
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8
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How many 2-digit positive integers are divisible by 4 or 9?
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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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If Sn denote the sum of the first n terms of an A.P. If S2n = 3Sn , then S3n : Sn is equal to
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