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标题: [求助]一题 [打印本页]

作者: uniqueness    时间: 2005-3-29 12:53     标题: [求助]一题

a necklace is made by stringing N indivudual beads together in the repeating pattern red, bead, green bead, white bead, blue bead, and yellow bead. if the neclace design begins with a read bead and ends wiht a white bead, then N could equal.

答案为68,请指敎!谢谢!
作者: WTO    时间: 2005-3-29 13:01

N=5*n+3, when n=13, N=68
作者: sammen    时间: 2005-3-29 20:01

同意,应该是这个方程然后再去选项里找。
作者: uniqueness    时间: 2005-3-30 11:46

以下是引用WTO在2005-3-29 13:01:00的发言: N=5*n+3, when n=13, N=68
thx




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