) ข้อที่ เซต A เซต B 1 {1, 2} $\left(3,4$ 5} {a} {1, 2} $\dfrac {2} {3}$ $\left(3,$ 4} fa, b, c} 4 $\left(2$ , 4} {5, 6) 5 {1, $2,3\right)$ $\left(5,7,9\right)$ 6 {1, 2} {{1}, $\left(2\right)\right)$ 7 $\left(m,n\right)$ $\left(0\right)$ 8 {2, n} 9 {a, b} $\left(3,4,5,6,...,$ $20\right)$ $10$ $\left(1,2,3\right)$ | $\left(1,3,5,7,.,121\right)$ 11 {a, b, c} {2, 4} 12 $\left(\times ,y\right)$ {1, $2,3\right)$ 13 $\left(x,y\right)$ $\left(1,2,3\right)$

$A.\times .B.=\left(.\left(4$ $B\times A=\left(4^{4}\right)7$ $5\right)+\left(741$ $+$ $A\times A=f\left(4$ $+4\right)$ $\left(4+5.\right)+$ $\left(54\right)0$ $B.\times ..B=\left(161^{6}\right).9^{l5}4.7\right)$ เซต A เซต B {1, 2} $\left(3,4,5\right)$ $\left(\left(1$ 3), C {a} {1, 2} $S\left(a$ {3, 4} {a, b, C} $ \begin{cases} - \\ 2, \end{cases} $ 4} {5, 6} $5\left(g_{1}5$ {1, $2,3\right)$ $\left(5,7,$ 9} {1, 2} $\left(\left(1\right)$ {2}} $\left(m,$ n} $\left(9\right)$ {2, ท} {a, b} $\left(3,4,5,6,...,$ $20\right)$ $\left(1,$ $2,3\right)$ | $\left(1,3,5,7,..,121\right)$

ก.{ซ,{3}, $\left(1233\right)$ $0.\left(Ø\left(33,$ (123}{6}} $\left(A.\left(Ø\left(\left(\left(1\right),$ $\left(123\right),$ $3\right)\right)$ $3.$ $\left(\left(Ø,\left(1\right)\right),\left(3\right),\left(1,2,3\right)$