Question

9) There are 5 blue beads and 7 black beads in a box. If one bead is taken without looking. a) What is the probability of getting a blue bead? b) What is the probability of a black bead?​

Answer 1

Step-by-step explanation:

s={5 blue beads +7 black beads}

n(s)=12

event A= blue bead ={5}

n(a)=5

p(a)=n(a)/n(s)

=5/12

event b =. black beads={7)

n(b)=7

p(b)=n(b)/n(s)

=7/12