Question

a marble is selected at random from a box containing 7 yellow, 5 red, 12 blue marbles. determine the probability that the marble is either yellow or red

Answer 1

hey mate your answer↓

S={y1, y2, y3, y4, y5, y6, y7, r1, r2, r3, r4, r5, b1, b2, b3, b4, b5, b6, b7, b8, b9, b10, b11, b12}

n(s) =24

A-marble either yellow or red

A={y1, y2, y3, y4, y5, y6, y7, r1, r2, r3, r4, r5}

n(A) =12

p(A) =12/24=1/2

the probability that the marble is either yellow or red is 1/2

hope that it will help you ❤❤❤