If the 3rd and the 5th term of an arithmetic progression are 13 and 21, what is the 13th term?
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If the nth term of an A.P. is 2n + 1, then the sum of first n terms of the A.P. is
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The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 is
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If Sn denote the sum of the first n terms of an A.P. If S2n = 3Sn , then S3n : Sn is equal to
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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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5
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The common difference of the A.P. \(\frac{1}{3}, \frac{{1 - 3b}}{3} , \frac{{1 - 6b}}{3}\) . . . . . . is
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6
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The 2nd and 8th term of an arithmetic progression are 17 and -1 respectively. What is the 14th term?
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7
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A piece of equipment cost a certain factory 6,00,000. If it depreciates in value, 15% the first year, 13.5% the next year, 12% the third year, and so on, what will be its value at the end of 10 years, all percentages applying to the original cost?
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If three numbers be in G.P., then their logarithms will be in
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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Find the 15th term of the sequence 20, 15, 10 . . . . .
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