If the sum of n terms of an A.P. is 3n2 + 5n then which of its terms is 164 ?
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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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2
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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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3
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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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4
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The sum of first n odd natural numbers in
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5
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Two A.P.’s have the same common difference. The first term of one of these is 8 and that of the other is 3. The difference between their 30th terms is
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6
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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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7
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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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8
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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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9
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If 18, a, b - 3 are in A.P. then a + b =
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10
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The two geometric means between the number 1 and 64 are
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