If the 7^{th} term of a H.P. is 1/10 and the 12^{th} term is 1/25, then the 20^{th} term is
1/41
1/45
1/49
1/37
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1
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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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2
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Find the nth term of the following sequence :
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3
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If S1 is the sum of an arithmetic progression of ‘n’ odd number of terms and S2 is the sum of the terms of the series in odd places, then \(\frac{{{S_1}}}{{{S_2}}}\)
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4
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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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5
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If a + 1, 2a + 1, 4a  1 are in A.P., then the value of a is:
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6
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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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7
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The 4th and 7th term of an arithmetic progression are 11 and 4 respectively. What is the 15th term?
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8
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The sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is
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9
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A boy agrees to work at the rate of one rupee on the first day, two rupees on the second day, and four rupees on third day and so on. How much will the boy get if he started working on the 1st of February and finishes on the 20th of February?
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10
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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