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Mathematics 24 Online
OpenStudy (anonymous):

What prime is greater than a perfect square and 7 less than the next-largest square?

OpenStudy (anonymous):

\(\Large \text{some where here} ~1,2,3,4,5,6,7\)

OpenStudy (anonymous):

so i would say 3 since 1>3>4

OpenStudy (anonymous):

wait ugh i thought less than 7 xD

OpenStudy (anonymous):

sorry

OpenStudy (jhannybean):

Haha i thought the same, Marki

OpenStudy (anonymous):

lol its ok

OpenStudy (anonymous):

haha 7 itself work

OpenStudy (anonymous):

5 also

OpenStudy (anonymous):

ok lets assume it 5 :3 4<5<9 and 7<9

OpenStudy (anonymous):

Thanks for helping me I suck at problems with perfect squares involved

OpenStudy (anonymous):

me as well sometimes :P dont worry

OpenStudy (anonymous):

So the answer is 7<9?

OpenStudy (anonymous):

hmm the answer is 5

OpenStudy (phi):

7 less than the next-largest square? means if we call the unknown prime "p", then p= (n+1)^2 - 7 where n^2 is the the square and (n+1)^2 is the next-largest square

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