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In the school there are 150 students, 100 are boys and 50 are girls. In an...

In the school there are 150 students, 100 are boys and 50 are girls. In an English test conducted (college level) 70 boys and 40 girls passed while the others failed. What is the probability of choosing a 'boys' or a 'Failed' students ?

Math   Statistics-And-Probability   
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