Question

Find the negation of the statement "No square of a real number is less than zero".

• A. For every real number $a,a^{2}$ is non-negative
• B. $\forall \, a\in R, \, a^{2}\geq 0$
• C. There exists a real number greater than $0$
• D. There exists a real number less than $0$

Answer 1

Answer: (D)

Square of a real number is always non-negative.
Hence its negation will be: there exists a real number less than $0$