A person has a mass of 70 kg. Express this mass in g.​

Okay so i didn't get this problem petro bought 8 tickets to a basketball game he paid a total of $200 write an equation to determine whether each ticket cost $26 or $28 so i didn't get this question so yeahyou have a good day.

What are the values of each variable in the diagram below?

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)