could someone please help me with this question ?

a lottery has 45 balls (1 to 45)

6 balls are randomly generated each week

you can choose the amount of numbers you want to play

example

you can pick 1 number and it pays 6 to 1 if your 1 number comes up in one of the 6

numbers

1. question

I decide to bet £1 on 3 numbers 16 17 23 , which pays 600 to 1 ,

what are the real odds of hitting all 3 of my numbers and bagging

600 smackeroons!

2. what is the ev for this game?

tx