Math 8R
posted by Laruen .
Which of the following is NOT a real number?
a) 0.0005
b) 13/0
c) square root of 1/16
I picked c, am i correct???????

Yes.

thank you

Sorry, completely misread the order of the letters. No, b is correct. Because 13/0 is undefined.

ohhhhh
thank you! 
The square root of 1/16 is 0.25 which is a real number. When the number under the square root is negative , that's when you have a number that is not real.

You're welcome.