If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term is :
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What is the sum of the first 12 terms of an arithmetic progression if the first term is 19 and last term is 36?
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The two geometric means between the number 1 and 64 are
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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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The 7th and 21st terms of an AP are 6 and 22 respectively. Find the 26th term
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Find the 15th term of the sequence 20, 15, 10 . . . . .
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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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For an A.P. if a25  a20 = 45, then d equals to:
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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Consider an infinite G.P. with first term a and common ratio r, its sum is 4 and the second term is 3/4, then
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The 7th and 12th term of an arithmetic progression are 15 and 5 respectively. What is the 16th term?
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