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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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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2
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Which term of the A.P. 92, 88, 84, 80, ...... is 0?
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3
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In an A.P., if d = -4, n = 7, an = 4, then a is
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4
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The two geometric means between the number 1 and 64 are
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5
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How many 2-digit positive integers are divisible by 4 or 9?
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6
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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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7
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If the first term of an A.P. is 2 and common difference is 4, then the sum of its 40 term is
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8
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Find the nth term of the following sequence :
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9
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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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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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