...的卡片,分别写着1、2、4、5、8,从中任意取3张卡片并排在一起_百度知...答:偶数即个位是偶数:2.4.8 3×(3×4)=3×12=36种:个位数是2:142,152,182,412,452,482,512,542,582,812,842,852 个位数是4:124,154,184,214,254,284,514,524,584,814,824,854 个位数是8: 128,148,158,218,248,258,418,428,458,518,528,548,所以,一共36个 ...