What is the sum of the following series? -64, -66, -68, ......, -100
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A boy agrees to work at the rate of one rupee on the first day, two rupees on the second day, and four rupees on third day and so on. How much will the boy get if he started working on the 1st of February and finishes on the 20th of February?
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2
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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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3
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How many terms are there in the GP 5, 20, 80, 320........... 20480?
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4
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The sum of the first 16 terms of an AP whose first term and third term are 5 and 15 respectively is
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5
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What is the sum of all 3 digit numbers that leave a remainder of '2' when divided by 3?
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6
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What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?
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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 sum of the first and third term of an arithmetic progression is 12 and the product of first and second term is 24, then first term is
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9
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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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10
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What is the sum of the first 12 terms of an arithmetic progression if the 3rd term is -13 and the 6th term is -4?
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