Help pleeaseee ): ?

What number produces an irrational number when multiplied by -1.25

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

Afamily has five members. a mom, a dad, two sisters, & a brother. the family lines up single file. what is the probabillity that the mom is at the front of the line