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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1
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What is the sum of the first 17 terms of an arithmetic progression if the first term is -20 and last term is 28?
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2
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What is the sum of the following series? -64, -66, -68, ......, -100
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3
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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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4
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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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5
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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
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6
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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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7
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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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8
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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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9
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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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10
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If log 2, log (2x -1) and log (2x + 3) are in A.P, then x is equal to ___
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