What is the sum of the following series? -64, -66, -68, ......, -100
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1
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What is the sum of the first 13 terms of an arithmetic progression if the first term is -10 and last term is 26?
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10
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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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2
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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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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The first term of an Arithmetic Progression is 22 and the last term is -11. If the sum is 66, the number of terms in the sequence are:
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5
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If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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6
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The sum of first n odd natural numbers in
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7
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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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8
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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9
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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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