How many integers between 1000 and 10000 have no digits other than 4, 5, or 6?
91
71
51
81
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1
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If A and B are two independent events with P(A) = 3/5 and P(B) = 4/9 , then P(A' ∩ B' ) equals
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2
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From among the 36 students in a class, one leader and one class representative are to be appointed. In how many ways can this be done?
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3
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How many parallelograms will be formed if 7 parallel horizontal lines intersect 6 parallel vertical lines?
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4
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What is the sum of all 4 digit numbers that can be formed by the digits 1, 2, 3, 4 each exactly once
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5
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A, B, C, and D are four points, any three of which are noncollinear. 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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6
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If ,, are probabilities of three mutually exclusive events, then
SolutionAnswer :1/2 
7
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If four dice are thrown together, then what is the probability that the sum of the numbers appearing on them is 25 ?
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8
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In how many ways can the letters of the word 'LEADER' be arranged?
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9
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There are 20 people among whom two are sisters. Find the number of ways in which we can arrange them around a circle so that there is exactly one person between the two sisters.
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10
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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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