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5 September, 07:08

If a coin has been altered so that the probability of heads coming up is 3/10, then the probability of tails coming up is 7/10. True or False

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  1. 5 September, 10:19
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    This is true. When there are only two options and the probability of one option is given, then the probability of the other option is (1 - the probability of the given option). Therefore 1 - 3/10 = 7/10
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