A six-sided number cube with faces numbered 1, 2, 3, 4, 5, and 6 is rolled.
Which events are mutually exclusive?
A.
rolling a 4, rolling a prime number
B.
rolling a 3, rolling a prime number
C.
rolling a 2, rolling an even number
D.
rolling a 5, rolling an odd number
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OpenStudy (anonymous):
anyone?
OpenStudy (anonymous):
no one?
OpenStudy (welshfella):
consider A . Is 4 a prime number?
hartnn (hartnn):
ask yourself :
is 4 a prime number?
is 3 a prime number?
is 2 an even number?
is 5 a odd number?
The one in which you get the answer as NO is your answer :)
OpenStudy (anonymous):
4 is prime,3 is prime,2 is even,5 is an odd number..i dont get it
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OpenStudy (xapproachesinfinity):
4 is not prime
hartnn (hartnn):
how is 4 a prime number?
hartnn (hartnn):
4 = 2*2
OpenStudy (anonymous):
oh duh lol my bad haha
OpenStudy (xapproachesinfinity):
consider what a prime number means
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OpenStudy (anonymous):
so A, right?
OpenStudy (xapproachesinfinity):
yes
OpenStudy (anonymous):
k thanks guys
OpenStudy (xapproachesinfinity):
mutually exclusive means they cannot occur at the same time
OpenStudy (xapproachesinfinity):
like tossing a coin you either get head or tail you cannot have them both at the same time
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