If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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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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The nth term of an A.P., the sum of whose n terms is Sn, is
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The 3rd and 7th term of an arithmetic progression are -9 and 11 respectively. What is the 15th term?
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If four numbers in A.P. are such that their sum is 50 and the greatest number is 4 times the least, then the numbers are
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For A.P. T18 - T8 = ........ ?
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If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =
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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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Let S denotes the sum of n terms of an A.P. whose first term is a. If the common difference d is given by d = Sn – k Sn-1 + Sn-2 then k =
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If the sum of n terms of an A.P. be 3n2 + n and its common difference is 6, then its first term is
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After striking the floor, a rubber ball rebounds to 4/5th of the height from which it has fallen. Find the total distance that it travels before coming to rest if it has been gently dropped from a height of 120 metres.
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