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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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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The 7th and 21st terms of an AP are 6 and 22 respectively. Find the 26th term
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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The nth term of an A.P., the sum of whose n terms is Sn, is
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If 18, a, b  3 are in A.P. then a + b =
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If the sum of p terms of an A.P. is q and the sum of q terms is p, then the sum of (p + q) terms will be
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A square is drawn by joining the mid points of the sides of a given square in the same way and this process continues indefinitely. If a side of the first square is 4 cm, determine the sum of the areas all the square.
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If three numbers be in G.P., then their logarithms will be in
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Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.
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The first term of an Arithmetic Progression is 22 and the last term is 11. If the sum is 66, the number of terms in the sequence are:
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