A polygon has 44 diagonals. What is the number of its sides?
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A, B, C, and D are four points, any three of which are non-collinear. Then, the number of ways to construct three lines each joining a pair of points so that the lines do not form a triangle is
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Find the number of ways in which mixed double tennis game can be arranged amongst 9 married couples if no husband and wife play in the same game
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3
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In how many ways can a cricketer can score 200 runs with fours and sixes only?
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A box contains two white balls, three black balls and four red balls. Balls of the same colour are distinct. The number of ways in which three balls can be drawn from the box if atleast one black ball is to be included in the draw, is
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5
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If 18Cr = 18Cr+2 ; find rC5.
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6
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What is the probability of getting at least one six in a single throw of three unbiased dice?s
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7
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Seven different objects must be divided among three people. In how many ways can this be done if one or two of them must get no objects?
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8
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There are 6 letters for 3 envelopes. In how many different ways can the envelopes be filled?
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If
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A committee of 8 members is to be selected from a group of 12 male and 10 female members. In how many ways the committee is selected such that at most two and at least one male member are there in the committee?
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