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Mathematics 28 Online
OpenStudy (reagan18):

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?

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):

?

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?

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?

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

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 \[\{1,3,4\}\]

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

satellite73 (satellite73):

k good

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