# Why is $0/0$ ot equal to $1$? [duplicate]

If $3/3=1, 2/2=1, 1/1=1$, then why is $0/0$ undefined? Why is it not $1$?

## marked as duplicate by Winther, user147263, yoknapatawpha, Thomas, Eric WofseyOct 8 '15 at 18:08

• If $1 = 0/0$, what are you going to do about $(0+0)/0$? – TokenToucan Oct 8 '15 at 15:44
• There can´t be a multiplicative inverse to $0$ because $0 x=0\neq1$ – Peter Melech Oct 8 '15 at 15:45