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Mathematics 16 Online
OpenStudy (anonymous):

please tell me if these are true or false. If you are a teenager, then you are younger than 20. IF you are younger than 20, then you are a teenager.

OpenStudy (anonymous):

it is true

OpenStudy (anonymous):

umm i asked if they were true or false so yes doesn't really help. and also cant you be younger than 20 and not be a teenager. I'm wondering mostly if both are false or if just the second. unless you think differently!

OpenStudy (anonymous):

not true for sure

OpenStudy (anonymous):

if you are a teenager then you are younger than twenty. true if you are younger than twenty, then you are a teenager. false

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

that is why the statement if you are younger than twenty, then you are a teenager. is false

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

i'm talking about the first statement though!

OpenStudy (anonymous):

the first statement says IF YOU ARE A TEENAGER

OpenStudy (zarkon):

the first statement is true...as already indicated

OpenStudy (anonymous):

so that is the "premise"

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

ok im sorry! ok ok

OpenStudy (anonymous):

we know you are a teenager. you could be 13,14,15,16,17,18, or 19

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

yes!

OpenStudy (anonymous):

in which case you are certainly under 20

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

yes ok thank you!

OpenStudy (anonymous):

yw

OpenStudy (anonymous):

no, they are both false, they have to be between the ages 13-19 to be a teenager

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

thats what i thought but i dont know! now im just confused!

OpenStudy (zarkon):

I would listen to satellite73 if I were you...he is correct.

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

ok thanks i guess but i do understand both sides

OpenStudy (anonymous):

hold on this is not that weird

OpenStudy (anonymous):

if today is tuesday, then i am going to each lunch. you would not say this is false just because i eat lunch on wednesday as well would you?

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

i would say thats true

OpenStudy (anonymous):

yes of course.

OpenStudy (anonymous):

but now you seem to be confused because a ten year old is under twenty as well. like saying i eat lunch on wednesday too

OpenStudy (anonymous):

but if your a teenager your not 10! thats impossible but you are still younger than 20!

OpenStudy (anonymous):

no i understand thank you

OpenStudy (anonymous):

so what? a ten year old can be under twenty, that doesn't mean a teenager isn't.

OpenStudy (anonymous):

think of it this way: the set of teenagers sits inside the set of people under twenty. so i i am in the smaller set (teenagers) i must also be inside the larger set

OpenStudy (anonymous):

and without meaning to seem to give you a hard time, if it wasn't because you were taking some math/logic class you would not think twice about this. if a friend told you his son was a teenager, you would know immediately his son was under 20

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