Question

any ideas?

Answer 1

p(all)=1

Answer 2

so p(r)+p(b)+p(g)+p(s)=1, you know Pa, Pb,Ps, so you add them up and subtract from 1

Answer 3

5/8

Answer 4

how about this one?

Answer 5

are you sure you did that addition correctly

Answer 6

you have 4 probabilities that are given
and you know the sum of them is 1
and then solve the equation for n

Answer 7

hint for second question you can use something that was already said here

Answer 8

3/8

Answer 9

yes 1/3+1/8+3/8+1/6 is 1

Answer 10

you have found n so that the thingy given was a probability distribution table

Answer 11

could you help me out with this one as well?

Answer 12

add them up and behold