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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If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =
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2
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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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3
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15th term of A.P., x - 7, x - 2, x + 3, ........ is
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4
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If the fifth term of a GP is 81 and first term is 16, what will be the 4th term of the GP?
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5
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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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6
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A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
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7
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If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :
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8
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The first and last term of an A.P. is a and l respectively. If S is the sum of all the terms of the A.P. and the common difference is given by \(\frac{{{l^2} - {a^2}}}{{k - \left( {l + a} \right)}}\) then k = ?
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9
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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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10
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In an A.P., if d = -4, n = 7, an = 4, then a is
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