Given a set of numbers N = {1, 3, 4, 5, 7}. If event A is the drawing of a number less than 4 and event B is the drawing of an even number, what is the probability that either event A or event B will occur?
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OpenStudy (reagan18):
4/5?
OpenStudy (reagan18):
oh wait 2/5? because its 2 options?
OpenStudy (royalranger):
That would depend on which event you are talking about.
OpenStudy (reagan18):
they are asking about both
OpenStudy (reagan18):
?
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satellite73 (satellite73):
count
OpenStudy (reagan18):
1/5 then
OpenStudy (royalranger):
Yes, but you need to take them one at a time. You cannot combine both probabilities.
OpenStudy (reagan18):
OH
satellite73 (satellite73):
how many are even numbers, or number less than four?
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satellite73 (satellite73):
it is not 1/5, that is for sure
OpenStudy (reagan18):
ok there is 1 even number and 3 numbes greater then 4
OpenStudy (reagan18):
i mean less than
satellite73 (satellite73):
lets list them
satellite73 (satellite73):
1 is less than 4, right?
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OpenStudy (reagan18):
yeah.
satellite73 (satellite73):
ok how about 3, is that less than four?
OpenStudy (reagan18):
ya
satellite73 (satellite73):
ok and 4, that is not less than 4 is it? but it is even right?
OpenStudy (reagan18):
yes its even
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satellite73 (satellite73):
how about 5?
OpenStudy (reagan18):
no its not even nor is it less than 4
satellite73 (satellite73):
ok and 7?
OpenStudy (reagan18):
same
satellite73 (satellite73):
the the list is \[\{1,3,4\}\]
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satellite73 (satellite73):
i count three in the list of the numbers that are even or less than 4
three out of five total
OpenStudy (reagan18):
ohhhh
OpenStudy (reagan18):
tyy
satellite73 (satellite73):
yw, dd you get \(\frac{3}{5}\)as the answer?
OpenStudy (reagan18):
yes
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