What is the sum of the following series? -64, -66, -68, ......, -100
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Consider an infinite G.P. with first term a and common ratio r, its sum is 4 and the second term is 3/4, then
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2
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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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3
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A boy agrees to work at the rate of one rupee on the first day, two rupees on the second day, and four rupees on third day and so on. How much will the boy get if he started working on the 1st of February and finishes on the 20th of February?
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4
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The first and last term of an A.P. is a and l respectively. If S is the sum of all the terms of the A.P. and the common difference is given by \(\frac{{{l^2} - {a^2}}}{{k - \left( {l + a} \right)}}\) then k = ?
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5
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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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6
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The sum of the first four terms of an A.P. is 56. The sum of the last four terms is 112. If its first term is 11, the number of terms is
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7
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If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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8
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If 7 times the seventh term of an Arithmetic Progression (AP) is equal to 11 times its eleventh term, then the 18th term of the AP will be
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9
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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10
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Find the 15th term of the sequence 20, 15, 10 . . . . .
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