A jar contains 40 red marbles numbered 1 to 40 and 50 blue marbles numbered 1 to 50. A marble is drawn at random from the jar. Find the probability of the given event. Please enter reduced fractions.

(a) The marble is red. P(red)=
Correct

(b) The marble is odd-numbered. P(odd)=
Incorrect

(c) The marble is red or odd-numbered. P(red or odd) =
Incorrect

(d) The marble is blue or even-numbered. P(blue or even) =