标题: 求助OG11 PS88题 [打印本页] 作者: 上官 时间: 2009-11-20 00:44 标题: 求助OG11 PS88题 A necklace is made by stringing N individual beads together in the repeating pattern red bead,green bead,White bead,blue bead,and yellow bead。If thenecklace design with a red bead and ends with a bead,then N could equal