Question

1 bedroom

2 bedroom
3 bedroom
1st floor
3
1
1
2nd floor
2
2
2
3rd floor
1
4
1
If an apartment is selected at random, what is the probability that it is on the 2nd floor or has 3 bedrooms?

Answer 1

seven because 1+2 is 3 and 3+1 is 4 so in total is seven