If the sum of three consecutive terms of an increasing A.P. is 51 and the product of the first and third of these terms is 273, then the third term is :
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Which term of the A.P. 24, 21, 18, ............ is the first negative term?
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If 18th and 11th term of an A.P. are in the ratio 3 : 2, then its 21st and 5th terms are in the ratio
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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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A piece of equipment cost a certain factory 6,00,000. If it depreciates in value, 15% the first year, 13.5% the next year, 12% the third year, and so on, what will be its value at the end of 10 years, all percentages applying to the original cost?
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5
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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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6
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For an A.P. if a25 - a20 = 45, then d equals to:
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7
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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8
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The nth term of an A.P., the sum of whose n terms is Sn, is
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9
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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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10
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If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :
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