Q16
The three-digit integer kss is the sum of the two-digit integers ks and rs, where k, r, and s are the digits of the integers. Which of the following must be true?
I. k = 2
II. r = 9
III. s = 5
A.I only
B.II only
C.III only
D.I and II
E.II and III
答案是B。 這題我又不知道題意了！ 什麼三位數kss 和ks , rs，
我傻傻分不清楚...
