计算题999…99 × 999…99 +1999…99计算999…99 × 999…99 +1999…99 后所得的末尾有( )个零.(1992个)(1992个)(1992个)

问题描述:

计算题999…99 × 999…99 +1999…99
计算999…99 × 999…99 +1999…99 后所得的末尾有( )个零.
(1992个)(1992个)(1992个)