Question

Which of the following is not a real number?
OA. √ O
B. √-3
O C. √ A
D. √5

Answer 1

`√(-3)` is not a real number.

Explanation:

`√(-3)=√(-1)* √(3)=\dot\iota √(3)`

This implies that
`√(-3)` is not a real number. option B is correct option

Next, if A is negative number then
`√(A)` will not a real number.