单选题 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 the necklace design begins with a red bead and ends with a white bead, then N could equal

【正确答案】 E
【答案解析】[解析] 因为白色珠子位于第三个位置，所以N的值应满足：
N=5n+3
也即在只有被5除余数为3的数才可能等于N。在5个选项中，只有68=5×13+3满足条件。