Given two sets, X = {things that are impossible or untrue} and Y = {mathematical statements}, which of the following are in X ∩ Y?.
A. cow jumps over the moon.
B. A cat tells you a story.
C. 99 - 2 = 1,000
D. 15^2 = 15
E. Candy is sweet.
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OpenStudy (anonymous):
@mary.rojas
OpenStudy (anonymous):
X ∩ Y means all those elements which are contained in both X and Y. Can you identify the mathematical statements here?
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OpenStudy (anonymous):
No. C and D both are mathematical statements here.
OpenStudy (anonymous):
yeah but Y= mathematical STATEMENTS
OpenStudy (anonymous):
yea aren't they asking for mathematical statements
OpenStudy (anonymous):
Since they are mathematical statements and also untrue, X ∩ Y = C,D
OpenStudy (anonymous):
oops so\rry!!!1
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OpenStudy (anonymous):
i have a different options list in front of me!
OpenStudy (anonymous):
i man C&D?
OpenStudy (anonymous):
*mean
OpenStudy (anonymous):
It's okay! :) But you got it, right?
OpenStudy (anonymous):
yea i said C & D..
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OpenStudy (anonymous):
thank u. :)
OpenStudy (anonymous):
Yes. C and D are present in set Y as well as set X.
OpenStudy (anonymous):
yw! :)
OpenStudy (anonymous):
i have another question though
OpenStudy (anonymous):
Okay. Post it.
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OpenStudy (anonymous):
OpenStudy (anonymous):
I'm sorry. I don't know how to do this. Maybe someone else can help?
OpenStudy (anonymous):
oh :( ok... idk anyone that knows this though
OpenStudy (anonymous):
@mary.rojas
OpenStudy (anonymous):
@ybarrap
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OpenStudy (anonymous):
HELP
OpenStudy (mary.rojas):
@mathstudent55 help?
OpenStudy (foreverandalways13):
@Luigi0210
OpenStudy (anonymous):
hopefully there'll be an explanation by then... :(
OpenStudy (ybarrap):
Let P = probability of not winning with a single ticket
Then probability of not winning with 2 tickets is P^2
The probability of winning with 2 tickets then is the complement: 1-P^2
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OpenStudy (mary.rojas):
@music101
OpenStudy (ybarrap):
P=1-.03
OpenStudy (anonymous):
that's the answer??
OpenStudy (anonymous):
that's not an option though..
OpenStudy (anonymous):
these are the options:
A. 0.0726
B. 0.6200
C. 0.0396
D. 0.0591
E. 0.0018
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OpenStudy (anonymous):
@ybarrap
OpenStudy (anonymous):
A?
OpenStudy (anonymous):
wait nvm
OpenStudy (ybarrap):
i see the answer in your option list. You just need to calculate 1 - (1-.03)^2
OpenStudy (anonymous):
oh I didn't see the "^2" part
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