将一个正六面体骰子连掷两次,它们的点数都是4的概率是( ) A. B. C. D.

1个回答

  • D

    连掷两次骰子出现的点数情况,共36种:(1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6),(3,1),(3,2),(3,3),(3,4),(3,5),(3,6),(4,1),(4,2),(4,3),(4,4),(4,5),(4,6),(5,1),(5,2),(5,3),(5,4),(5,5),(5,6),(6,1),(6,2),(6,3),(6,4),(6,5),(6,6).而点数都是4的只有(4,4)一种.