12 person are seated at a round table. Number of ways of selecting 2 persons not adjacent to each other is
10
11
54
48
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A basketball team of 5 players is to be selected from a group of 10 men and 8 women players. A volley ball team of 6 players is to be selected from a group of 8 men and 7 women players. Find the difference in the number of ways in which both the teams are selected, given that each team has only 2 female players.
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2
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Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
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3
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How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?
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4
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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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5
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How many parallelograms will be formed if 7 parallel horizontal lines intersect 6 parallel vertical lines?
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6
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In how many different ways can the letters of the word 'OPTICAL' be arranged so that the vowels always come together?
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7
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The number of triangles that can be formed by choosing the vertices from a set of 12 points, seven of which lie on the same straight line, is
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8
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In how many ways the letters of the word “UNDERDOG” can be arranged such that the first and last letters are same and no two vowels are together?
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9
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In a simultaneous throw of two dice, what is the probability of getting a total of 7?
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10
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In a single throw with four dice,the probability of throwing seven is
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