An irrational number between 2 and 2.5 is
Note: If a and b are two positive numbers, such that the product of a and b is not a perfect square of a rational number, then, is an irrational number lying between "a" and "b".
So, now we have two numbers 2 and 2.5.
Now the product of these two number is 5, which is not a perfect square. So, we can say that √5 is an irrational number lying between "2" and "2.5"
√5= 2.23606797749978969, Which is a non– terminating and non- repeating decimal.
Thus, option B is the correct answer.