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mariomintchev
A student signs up for 3 classes for this semester. the probability of getting an a in class 1 is 0.3. the probability of getting an a in class 2 is 0.4. the probability of getting an a in class 3 is 0.5.
a) what is the probability of getting 3 As this semester? b) what is the probability of getting 2 As this semester? c) what is the probability of getting at least 1 A this semester?
@Hero @jim_thompson5910 @karatechopper @KingGeorge @Mertsj @satellite73
These are independent events so you should multiply the individual probabilities.
thats what i was thinking. like for a).... .3 * .4 *.5 but what about the rest?