A bag contains 3 black, 4 white and 2 red balls, all the balls being different. The number of selection of at most 4 balls containing balls

Question

A bag contains 3 black, 4 white and 2 red balls, all the balls being different. The number of selection of at most 4 balls containing balls of all the
colours is…

in progress 0
Eliza 1 week 2021-09-10T14:38:35+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-09-10T14:40:08+00:00

    Step-by-step explanation:

    Required number of selection

    =

    3

    C

    1

    ×

    4

    C

    1

    ×

    2

    C

    1

    (

    6

    C

    3

    +

    6

    C

    2

    +

    6

    C

    1

    +

    6

    C

    0

    )

    =3×4×2(20+15+6+1)

    =42(4!)

    0
    2021-09-10T14:40:13+00:00

    Answer:

    Step-by-step explanation:

    Since each selection should have all the three colours, minimum 3 balls one each colour should be selected in3

    C  

    1

    ​  

    ×  

    4

    C  

    1

    ​  

    ×  

    2

    C  

    1

    ​  

     waysMaximum 6 balls are to be selectedMaximum 6 balls are to be selected                                                    =24(1+6+15+20)

                                                       =42×4!

Leave an answer

Browse
Browse

18:9+8+9*3-7:3-1*13 = ? ( )