0%. You can't pick a 3 then pick a 3 again, as there is only one 3 available to be picked. 0/1
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410 ?
Explanation : 4 comes from what you subtract and 10 comes from what the question would be if it was added
Answer:
P(largest or smallest) = 0.30 + 0.20 - 0.15
Step-by-step explanation
You combine the chances of doing the largest and smallest, without the chance of riding both.