The sum of first n odd natural numbers in
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1
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Find the first term of an AP whose 8th and 12th terms are respectively 39 and 59.
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2
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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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3
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In an A.P., if d = 4, n = 7, an = 4, then a is
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4
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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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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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Find the 15th term of the sequence 20, 15, 10 . . . . .
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7
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If a, b, c are in A.P., then (a – c)^{2}/ (b^{2} – ac) =
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8
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The 3^{rd} and 7^{th} term of an arithmetic progression are 9 and 11 respectively. What is the 15^{th} term?
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9
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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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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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