There are 12 balls in one hole. Some of which are red forces. If one of the forces is randomly extracted from the box, what is the probability that it is a red ball? If another 6 red balls are placed, the probability of getting a red ball is twice as long as it was before. So find the probability of a red ball.
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Answer:
probability = number of possible outcome/ number of favourable outcomes
= 12 / 6
= 2 .
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