Question

Banyak pooin tolong kak nomor 30,9 dan 10

Answer 1

10. n(S) = 30 anak
n(T) = 17 anak
n(T n U) = 6 anak
n(T n U)c = 4 anak
n(U) = ……?

n(S) = (n(T) - n(T n U)) + (n(U) - n(T n U)) + n(T n U) + n (T n U)c
30 = (17 - 6) + (n(U) - 6) + 6 + 4
30 = 11 + (n(U) - 6) + 6 + 4
30 = 21 + (n(U) - 6)
(n(U) - 6) = 30 - 21
n(U) = 9 + 6
n(U) = 15

smoga membantu