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 a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:
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If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
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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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4
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What is the sum of the following series? -64, -66, -68, ......, -100
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5
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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6
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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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7
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What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?
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What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?
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9
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If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?
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10
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For an A.P. if a25 - a20 = 45, then d equals to:
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