AMC 8 2014 Problem 22

AMC8 2014 年第 22

特殊数与不定方程★★★★
A 2-digit number is such that the product of the digits plus the sum of the digits is equal to the number. What is the units digit of the number?
一个两位数满足:各个位上数字之积加上各个位上数字之和,所得结果等于原来的两位数。 那么原来两位数的个位数字是多少?
  1. A.1
  2. B.3
  3. C.5
  4. D.7
  5. E.9

正确答案 · Correct Answer

E

解析 · Solution

解析整理中

继续练习

真题版权归属 MAA(AMC)。本站仅供学习用途。版权方如有异议,请联系本站予以下架。

Problems © MAA (AMC). This site is for study purposes only. Rightsholders may contact us for removal.