Question 4 Given A = {1, 2, 3,4, 5, 6} and B
{1,2, 3,., 11, 12} and S
{(a, b) & A x
-
*** ?
B| b = 2a + 5}. Find n(S) =?
Question 5 Given A = {1, 2, 3} and B = {2, 3, 5} and r = {(a, b) e A x B | a > 6 - 1}. Find
r and n(r) =?
Question 6 Given A = {1, 2, 3, .,9, 10} and B = {2, 4, 6, ., 20} and r =
{(r, ข) e Ax B| ข
=
* * * ๆ
* * * ๆ
+ r}. Find r and n(r) =?
{(x, ข) & AxB| ข =
Question 7 Given A = {1, 2, 3, .,9, 10} and B = {2, 4, 6, ..., 20} and r =
|r - 51}. Find r and n(r) =?
*** ๆ
** * *
