先倒满三斤油瓶,倒到七斤油瓶内
再倒满三斤油瓶,倒到七斤油瓶内,这时七斤油瓶内就有六斤油
再倒满三斤油瓶,倒到七斤油瓶内,只能倒入一斤,三斤油瓶内就留下二斤油.
把七斤油瓶内的七斤油倒回十斤油瓶内.并把三斤油瓶内的二斤油倒入到七斤油瓶内(是二斤油)
倒满三斤油瓶,倒到七斤油瓶内,这时七斤油瓶内就是2+3=5斤油(十斤油瓶内还留下五斤油).
先倒满三斤油瓶,倒到七斤油瓶内
再倒满三斤油瓶,倒到七斤油瓶内,这时七斤油瓶内就有六斤油
再倒满三斤油瓶,倒到七斤油瓶内,只能倒入一斤,三斤油瓶内就留下二斤油.
把七斤油瓶内的七斤油倒回十斤油瓶内.并把三斤油瓶内的二斤油倒入到七斤油瓶内(是二斤油)
倒满三斤油瓶,倒到七斤油瓶内,这时七斤油瓶内就是2+3=5斤油(十斤油瓶内还留下五斤油).