Problem Solving
试题详情
题目：
In a nationwide poll, N people were interviewed.If $$frac{1}{4}$$ of them answered "yes" to question 1, and of those, $$frac{1}{3}$$ answered "yes" to question 2, which ofthe following expressions represents the numberof people interviewed who did not answer "yes" to both questions?
选项:
A、 $$\frac{N}{7}$$
B、 $$\frac{6}{7}N$$
C、 $$\frac{5}{12}N$$
D、 $$\frac{7}{12}N$$
E、 $$\frac{11}{12}N$$
答案:
E
