Multiple Choice Question: There are four red, three green and five blue discs in a bag. Find the probability that two discs of the same color are drawn.

There are four red, three green and five blue discs in a bag. Find the probability that two discs of the same color are drawn.

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Orphaned Multiple Choice Questions (MCQ) due to changes of exam system.

Three marksmen simultaneously shoot and hit a rapidly spinning spherical target.
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