Question

root 2 real no hai ya nahi

Answer 1

The real numbers include all the rational numbers, such as the integer −5 and the fraction 4/3, and all the irrational numbers, such as √2 (1.41421356..., the square root of 2, an irrational algebraic number). Included within the irrationals are the transcendental numbers, such as π (3.14159265...).
Yess √2 is real number.

Answer 2

Root 2 is an irrational number and all the irrational numbers are real numbers. Hence, root 2is also a real number.