B. [tex] \frac{5}{8}, 2.5, \sqrt{10} [/tex]
Though ⅝ and 2.5 can be written in form of p/q where p is any real number and q ≠ 0.
But, in case of [tex] \sqrt{10} [/tex], the decimal expansion of this number is non - terminating, non - repeating.
⇒ This is an irrational number.
