Put four different letters into three postboxes,How many dif

Put four different letters into three postboxes,How many dif How many different kinds of letters can you think of with 1234can from how many different four-digit number? How many letters? How many sweets can you put into an empty bag? how many different kinds of letters do you think of?请用英语回答. you can put the letters into the_________box how do you put an elephant into a room in four steps? How many different four-digit numbers can be formed by rearr 正确抄写：how many children are there in class four grade three t 猜谜：How many sweets can you put into an empty bag Why How many letters in the word egg