If k, 2k – 1 and 2k + 1 are three consecutive terms of an AP, the value of k is
-2
-3
2
3
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1
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If a + 1, 2a + 1, 4a - 1 are in A.P., then the value of a is:
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2
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The sum of first n odd natural numbers in
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3
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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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4
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The 3rd and 8th term of an arithmetic progression are -13 and 2 respectively. What is the 14th term?
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5
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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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6
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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7
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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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8
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What is the sum of the first 11 terms of an arithmetic progression if the 3rd term is -1 and the 8th term is 19?
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9
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What is the sum of all positive integers up to 1000, which are divisible by 5 and are not divisible by 2?
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10
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The sum of first five multiples of 3 is:
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