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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The number of terms of the A.P. 3, 7, 11, 15, ....... to be taken so that the sum is 406 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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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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If sum of n terms of an A.P. is 3n^{2} + 5n and T^{m} = 164 then m =
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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6
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Find the 15th term of the sequence 20, 15, 10 . . . . .
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7
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If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is
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8
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What is the sum of the following series? 64, 66, 68, ......, 100
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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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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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