I’m in between option G and H. Help me!

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)