The value of ^{75}P_{2}
5450
5555
5550
5656
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1
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If P(A)=2/5, P(B)=3/10 and P(A ∩ B) =51, then P(A'  B'). P(B'  A') is equal to
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2
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In how many ways can 10 people line up at a ticket window of a railway station?
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3
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In how many ways can a group of 5 men and 2 women be made out of a total of 7 men and 3 women?
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4
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In a single throw with four dice,the probability of throwing seven is
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5
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If A, B and C are mutually exclusive and exhaustive events of a random experiment such that P(B)=3/2P(A) and P(C)=1/2P(B), then P(A∪C)=
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6
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In how many ways can the letters of the word 'LEADER' be arranged?
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7
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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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8
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A speaks truth in 75% cases and B in 80% of the cases. In what percentage of the cases are they likely to contradict each other, narrating the same incident?
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9
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In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?
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10
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How many rectangles can be formed out of a chess board ?
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