1.

A box contains 4 different black balls, 3 different red balls and 5 different blue balls. In how many ways can the balls be selected if every selection must have at least 1 black ball and one red ball ?_x005F_x000D_ A) 24 - 1  _x005F_x000D_ B) 2425-1   _x005F_x000D_ C) (24-1)(23-1)25   _x005F_x000D_ D) None

A. A
B. B
C. C
D. D
Answer» D. D


Discussion

No Comment Found