Question

Please help me to work this out

Answer 1

Answer:

P ( not white ball) = 2/3

Step-by-step explanation:

If there are 10 blue balls and 10 black balls and 10 white balls,

10+10+10 = 30 total balls

P(white ball) = white balls/ total balls

                     = 10/30

                      = 1/3

P (not getting a white ball) = not white/ total

                                            = (blue + black)/ total

                                              = (10+10)/30

                                                 =20/30

                                                    2/3