Mathematics
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OpenStudy (anonymous):
Robin randomly selects a number between 1 and 20. What is the probability that the number selected is the square of a natural number?
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OpenStudy (anonymous):
squared numbers between 1 &20 are1 ,4,9,16
favourable events=4
total no. of events=20
P=?
OpenStudy (anonymous):
?
OpenStudy (anonymous):
that makes no sense
OpenStudy (jennyrlz):
hmm let me try to clarify for you
OpenStudy (jennyrlz):
so he said that the squared numbers between 1 and 20 are 1,4,9,16
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OpenStudy (jennyrlz):
that means that their are four possibilities, you still with me
OpenStudy (jennyrlz):
there*
OpenStudy (anonymous):
yea
OpenStudy (jennyrlz):
ok so there are a total of 20 possibilities
OpenStudy (jennyrlz):
so the chances of you getting a squared number are 4/20
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OpenStudy (jennyrlz):
you get it :)
OpenStudy (anonymous):
yea but that isnt one of my choices
OpenStudy (jennyrlz):
well you can still simplify
OpenStudy (jennyrlz):
4/20
divide both sides by 4
1/5
OpenStudy (jennyrlz):
is that one of your choices :)
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OpenStudy (anonymous):
yup
OpenStudy (anonymous):
thanks
OpenStudy (jennyrlz):
no problem dont forget to medal :)
OpenStudy (jennyrlz):
thank you ^.^
OpenStudy (jennyrlz):
you should have actually medaled the first guy :/
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OpenStudy (jennyrlz):
all i did was explain his answer :/
OpenStudy (jennyrlz):
but thank you anyways :)
OpenStudy (anonymous):
yup
OpenStudy (jennyrlz):
see you around :) @ me if you have problems