Question

If the product of rational and irrational is always irrational. Then what about 2× √4 =4​

Answer 1

Answer:

Square root of 4 is 2….and 2 is clearly a rational number because it can be written in the form of p/q where p and q are coprime and q is not equal to 0

So,2× √4 =4 is a rational no.