Choose the correct description of the number set. (4 points)

(=⅝ , ⅞ , T/2 )
Irrational numbers only
（12,15,7）
(18, 19, V10)
(-7.4, 0, 3.232323..., /25 )
:: Irrational numbers only
Both Rational and Irrational numbers
:: Rational numbers only