Wayne is picking out some movies to rent, and he is primarily interested in dramas and horror films. He has narrowed down his selections to

Question

Wayne is picking out some movies to rent, and he is primarily interested in dramas and horror films. He has narrowed down his selections to 7 dramas and 16 horror films. How many different combinations of 3 movies can he rent if he wants at least two dramas

in progress 0
Orla Orla 5 years 2021-08-20T18:35:20+00:00 1 Answers 13 views 0

Answers ( )

  1. Jezebel
    0
    2021-08-20T18:36:43+00:00
    Reply

    Answer:

    The number of selections is 49.

    Step-by-step explanation:

    drama = 7

    horror films = 16

    Select 3 movies at least two dramas

    For 2 drama and 1 horror film

    (3 C 2) x (16  C 1) = 48

    For 3 drama

    (3 C 3) = 1

    So, total number of selections is 48 + 1 = 49.  

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )