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In a lottery, there are 7 prizes and 21 blanks. If a lottery is drawn at random, then what is the probability of getting a prize?
5Q:
In a lottery, there are 7 prizes and 21 blanks. If a lottery is drawn at random, then what is the probability of getting a prize?
- 1$${2\over5}$$false
- 2$${3\over5}$$false
- 3$${1\over4}$$true
- 4$${1\over10}$$false
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