Question

Diketahui
A = { 1, 2, 3 }
B = { a, b }
C = { 1, 3, 5, 7 }

Tentukan
a. A × B
b. B × C
c. A × C
d. n(A × B)
e. n(A × B)
f. A × B × C

Nb : kerjakan soal diatas menggunakan cara !

Answer 1

A. AXB =(1,a).(1,b),(2,a)(2,b),(3,a),(3,b)
b. BXC =(a,1),(a,3),(a,5),(a,7),(b,1),(b,3),(b.5),(b,7),
c. AxC = (1,1),(1,3),(1,5),(1,7),(2,1),(2,3),(2,5,),(2,7),(3,1),(3,3),(3,5),(3,7)
d. n(AxB) = n(A) x n(B) = 3x2 = 6
e. n(AxC)  = n(A) x n(C) = 3 x 4= 12

f. AxBxC =(1,a,1),(1,a,3),(1,a,5),(1,a,7), (1,b,1),(1,b,3),(1.b,5),(1,b,7),(2,a,1)(,(2,a,3)(2,a,5),(2,a,7),(2,b,1),(2,b,3),(2,b,5),(2,b,7), (3,a,1),(3,a,3),(3,a,5)(3,a,7),(3,b,1),(3,b,3), (3,b,5),(3,b,7)