The common difference of the A.P. \(\frac{1}{3}, \frac{{1 - 3b}}{3} , \frac{{1 - 6b}}{3}\) . . . . . . is
\(\frac{1}{3}\)
\( - \frac{1}{3}\)
-b
b
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1
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(1) + (1 + 1) + (1 + 1 + 1) + ....... + (1 + 1 + 1 + ...... n - 1 times) = ......
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2
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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3
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The 3rd and 9th term of an arithmetic progression are -8 and 10 respectively. What is the 16th term?
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4
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The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?
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5
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If the sums of n terms of two arithmetic progressions are in the ratio \(\frac{{3n + 5}}{{5n + 7}}\) then their nth terms are in the ration
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6
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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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7
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If the 7th term of a H.P. is 1/10 and the 12th term is 1/25, then the 20th term is
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8
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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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9
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The sum of first n odd natural numbers in
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10
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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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