If 18, a, b - 3 are in A.P. then a + b =
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1
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The sum of first five multiples of 3 is:
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2
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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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3
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Sum of n terms of the series \(\sqrt 2 + \sqrt 8 + \sqrt {18} + \sqrt {32} + \) ....... is
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4
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The 7th and 12th term of an arithmetic progression are -15 and 5 respectively. What is the 16th term?
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5
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If sum of n terms of an A.P. is 3n2 + 5n and Tm = 164 then m =
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6
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If the 7th term of a H.P. is 1/10 and the 12th term is 1/25, then the 20th term is
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7
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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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8
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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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9
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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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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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