A bag contains 6 white balls, 9 black balls. The probability of drawing a black ball is

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#Question id: 14491

#Biotechnology

A speaks truth in 75% and B in 80% of the cases. In what percentage of cases are they likely to contradict each other narrating the same incident ?

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#Question id: 14492

#Biotechnology

A die is rolled. The probability of getting a number 1 or 6 on the upper face is

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#Question id: 14493

#Biotechnology

The probability of the horse A winning the race is 1/5 and the probability of the horse B winning the same race is 1/6, then the probability of one of the horse to win the race is

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#Question id: 14494

#Biotechnology

A card is drawn from a pack of 52 cards and then a second is drawn. Probability that both the cards drawn are queen is

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#Question id: 14495

#Biotechnology

A bag contains 5 white and 3 black balls. Two balls are drawn at random one after the other without replacement. The probability that both the balls drawn are black is

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#Question id: 14496

#Biotechnology

4 coins are tossed. Then the probability that at least one head turns up is