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Mathematics 21 Online
OpenStudy (anonymous):

HELP WILL FAN AND GIVE MEDAL

OpenStudy (anonymous):

OpenStudy (anonymous):

@goformit100

OpenStudy (anonymous):

@mathstudent55

OpenStudy (anonymous):

anyone wanna help

OpenStudy (zzr0ck3r):

do you know what prime numbers are?

OpenStudy (anonymous):

um a number greater than 1

OpenStudy (zzr0ck3r):

nope it is a number (other than 1) that is only divisible by 1 and itself

OpenStudy (zzr0ck3r):

2,3,5,7,11,13,17,23 are the first few primes

OpenStudy (anonymous):

so it can't be D

OpenStudy (zzr0ck3r):

correct

OpenStudy (zzr0ck3r):

is every odd number only divisible by 1 and itself?

OpenStudy (anonymous):

can't be C either? 1 is an odd number

OpenStudy (zzr0ck3r):

hint:15

OpenStudy (zzr0ck3r):

correcy

OpenStudy (zzr0ck3r):

correct

OpenStudy (zzr0ck3r):

what about B

OpenStudy (zzr0ck3r):

is every integer a prime number? hint: is 1 a prime number?

OpenStudy (anonymous):

nope it can't be B

OpenStudy (zzr0ck3r):

so its?

OpenStudy (anonymous):

it's A

OpenStudy (zzr0ck3r):

correct

OpenStudy (anonymous):

right

OpenStudy (zzr0ck3r):

note that each element in that set is one of the first few primes I listed

OpenStudy (anonymous):

omg thanks you are a total life saver

OpenStudy (zzr0ck3r):

be carefull with primes, some numbers look like primes that are not.

OpenStudy (zzr0ck3r):

like 111

OpenStudy (anonymous):

i'm going to be posting more if you can help please do and thanks for your tips!

OpenStudy (zzr0ck3r):

seems like it should prime but 11 divides it...

OpenStudy (zzr0ck3r):

np

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