Ronnie will return from his 3 day trip on Monday, October 1. When did Ronnie's trip begin?

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

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

Can someone answer this question for me