sat1两道简单数学题看不懂（囧）,求解（即题是啥意思）第一个：When a certain odd number is divided by 5,the remainder is 1.Which digit must be in the units place of this odd number?A 1 B 3 C 5 D 7 E 9啥叫units place啊?第

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sat1两道简单数学题看不懂（囧）,求解（即题是啥意思）第一个：When a certain odd number is divided by 5,the remainder is 1.Which digit must be in the units place of this odd number?A 1 B 3 C 5 D 7 E 9啥叫units place啊?第
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sat1两道简单数学题看不懂（囧）,求解（即题是啥意思）第一个：When a certain odd number is divided by 5,the remainder is 1.Which digit must be in the units place of this odd number?A 1 B 3 C 5 D 7 E 9啥叫units place啊?第
sat1两道简单数学题看不懂（囧）,求解（即题是啥意思）
第一个：
When a certain odd number is divided by 5,the remainder is 1.Which digit must be in the units place of this odd number?
A 1 B 3 C 5 D 7 E 9
啥叫units place啊?
第二道：
Let a "prd" number be defined as one in which the product of the positive divisors of the number,not including the number itself,is greater than the number.Which of the following is a "prd" number?
A 8 B 15 C 18 D 21 E 27
这道题更看不懂了,正除数的积大于本身?
谢谢回答者的回答~

sat1两道简单数学题看不懂（囧）,求解（即题是啥意思）第一个：When a certain odd number is divided by 5,the remainder is 1.Which digit must be in the units place of this odd number?A 1 B 3 C 5 D 7 E 9啥叫units place啊?第
第1题是说,某个奇数被5除,余数是1.问该数的个位数是几.units place就是个位.答案是A.
第2题是说,将“prd数”定义为这样一种数,它的正因数（不含它本身）的积大于它自身.问以下哪个是prd数?答案是C,因为18的正因数有2,3,6,9,其积大于18.

sat1两道简单数学题看不懂（囧）,求解（即题是啥意思）第一个：When a certain odd number is divided by 5,the remainder is 1.Which digit must be in the units place of this odd number?A 1 B 3 C 5 D 7 E 9啥叫units place啊?第 求解一道SAT1的数学题 Sat1数学 看不懂题 两道初二数学题求解 初二数学题两道求解 求解,小学数学题,简单 SAT1的数学题 【十万火急】求解这2道数学题,看不懂!有图! （圆的问题）初三两道数学题求解 求解,两道数学题,计算,七年级 求解两道数学题,必修四,谢谢! 两道导数与微分数学题求解 简单的数学题,求解,微分. 简单的高中数学题求解 两道简单的七下数学题 1道小学数学题（表示看不懂.） 一道有关向量的简单数学题求解. 两道数学题,求解啊啊啊啊啊啊啊啊啊啊