Answers

2016-01-04T19:02:07+08:00
The probability of wearing a blue shirt is 3/10 while the probability of wearing a red shirt is 4/10 so, if we are getting the probability of wearing either a blue or a red one, we simply add these two probabilities. And that would be 3/10 + 4/10, which is equal to 7/10. Therefore, the probability's 7/10.

I think.
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