NDA Government Jobs Exams

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

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Four coins are tossed simultaneously. What is the probability of getting exactly 2 heads A bag contains 6 black and 4 white balls. Two balls are drawn at random one after the other without
replacement. What is the probability that both are black