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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If an A.P. has a = 1, tn = 20 and sn = 399, then value of n is :
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Find the nth term of the following sequence :
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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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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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The sum of first n odd natural numbers in
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6
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How many 2-digit positive integers are divisible by 4 or 9?
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7
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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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8
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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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9
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If a, b, c are in A.P., then (a – c)2/ (b2 – ac) =
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10
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The sum of n terms of an A.P. is 3n2 + 5n, then 164 is its
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