用2,3,4,6,9,12这六个数字写出三个大小相等的分数,每个数字只用一次,你能想出几种填法? ( )=( )=( ) ( )=( )=( )
问题描述:
用2,3,4,6,9,12这六个数字写出三个大小相等的分数,每个数字只用一次,你能想出几种填法? ( )=( )=( ) ( )=( )=( )
答
用2,3,4,6,9,12这六个数字写出三个大小相等的分数,每个数字只用一次,能想出2种填法:( 3/9 )=( 2/6 )=( 4/12 ) ( 9/3 )=( 6/2 )=( 12/4 )