Solution:
Solution:
$$P$$(one ball is white and one ball is black)$$=P$$(black ball from bag 1 and white ball from bag 2 or white ball from bag 1 and black ball from bag 2)
$$=\cfrac26\times\cfrac38+\cfrac46\times \cfrac58$$
$$=\cfrac{26}{48}=\cfrac{13}{24}$$
