In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?
1/10
2/5
2/7
5/7
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1
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The value of 75P2
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2
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A biased coin in tossed thrice. What is the probability that heads turns out at least twice considering that the probability of a head is 60%?
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3
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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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4
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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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5
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From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least three men are in the committee. In how many ways can it be done?
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6
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In a single throw with four dice,the probability of throwing seven is
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7
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Ten participants are participating in a competition. In how many ways can the first three prizes be won?
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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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12 person are seated at a round table. Number of ways of selecting 2 persons not adjacent to each other is
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10
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In how many different ways can the letters of the word 'CORPORATION' be arranged so that the vowels always come together?
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