有12个人要到河的对岸去,河边只有一条小船,船每次只能载4个人,小船至少要载几次才能全部过河?1_2I+r6J'Z
算式:提示3E+X*g4A(A1_2I+r6J'Z
答:小船至少要载;f,_7Y0A*d:J4P'I9K.d5`次才能全部过河。1_2I+r6J'Z