Mathematics, 12.08.2020 08:01, Hiadamcom
A box contains 40 identical discs which are either red or white if probably picking a red disc is 1/4. Calculate the number of;
1. White disc.
2. red disc that should be added such that the probability of picking a red disc will be 1/4
Answers: 3
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A box contains 40 identical discs which are either red or white if probably picking a red disc is 1/...
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