Question

The only number which is neither positive nor negative in a real number set is __________

• A. $\pi$
• B. 0
• C. $\infty$
• D. 1

Answer 1

The correct option is B 0

Zero (0) is the only number which is neither positive nor negative in the complete real number set.

Whereas 1,$\pi =3.14$ are positive real numbers and $\infty$ has no determined value.