A:5040
B:4850
C:2450
D:2550
观察下列算式:21=2,22=4,23=8,24=16,25=32,26=64,27=128,28=256,…,则89的个位数字是( )
108×64=____ 38×46=____
表上显示的是____时____分____秒.
- Don't talk in class, please.
- Sorry, I__________.