/sci/ - Science & Math

This is not homework

If n^2 is a multiple of 5 prove that n has to be a multiple of five.

n^2=5*k*n
k and n are natural numbers

therefore
n=5*k

is this correct? didn't they have to say in the text that n^2 has to be either 0 or 25 or over?

>>6736663

>>6550331

This is such a shit thread. Seriously, it's extremely reasonable to live on $27k a year happily, and at the same time I'm making connections to a better job in the future. I do things I enjoy every day, even if they are frustrating a lot of the time, and in my free time I socialize, drink, play frisbee, whatever, and enjoy myself. If you want to try to tell my I'm a wage slave chump then you're simply wrong. It's not about some contribution to society bullshit or trying to save the world, I just like lab work and so I do lab work.

Live within your means and do something you enjoy. A bigger TV and a flashy car wouldn't make me happy. Faggot.

>>6356902

Cool chemical reaction thread.