For an A.P. if a25  a20 = 45, then d equals to:
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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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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
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The 3rd and 8th term of an arithmetic progression are 13 and 2 respectively. What is the 14th term?
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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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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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The sum of first five multiples of 3 is:
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7
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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 the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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The sum of first five multiples of 3 is:
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10
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For A.P. T18  T8 = ........ ?
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