tolong bantu saya karena 1 jam lagi di kumpul.. beseta cara ya

Kelas 10 SMK

A = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }
B = { 2, 3, 5, 7, 11 }
S = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }

a] (A∩B) = { 2, 3, 5, 7, 11 }
(A∩B)' = { 0, 1, 4, 6, 8, 9, 10 }

B - A = { 11 }

(A∩B)' - (B - A)
= { 0, 1, 4, 6, 8, 9, 10 } - { 11 }
= { 0, 1, 4, 6, 8, 9, 10 }

b] { 0, 1, 4, 6, 8, 9, 10 } → 7
dengan menggunakan kombinasi

7C4 = 7 ! / ((7 - 4) ! . 4 !)
7C4 = 7 . 6 . 5 . 4 ! / (3 ! . 4 !)
7C4 = 7 . 6 . 5 / (3 . 2 . 1)
7C4 = 35