If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is
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The sum of n terms of an A.P. is 3n2 + 5n, then 164 is its
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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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3
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The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 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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For an A.P. if a25 - a20 = 45, then d equals to:
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6
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If 18th and 11th term of an A.P. are in the ratio 3 : 2, then its 21st and 5th terms are in the ratio
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7
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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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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 12 terms of an arithmetic progression if the first term is -19 and last term is 36?
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10
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The common difference of the A.P. \(\frac{1}{3}, \frac{{1 - 3b}}{3} , \frac{{1 - 6b}}{3}\) . . . . . . is
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