In a nationwide poll, N people were interviewed. If 1/4 of them said "yes" to question 1, and of those, 1/3 answered "yes" to question 2, which of the following questions represents the number of people interviewed that did NOT answer "yes" to both questions?
A. N/7
B. 6N/7
C. 5N/12
D. 7N/12
E. 11N/12
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The number of "yes" answers to question 2 (and question 1) is 1/3 of 1/4 of N, thus 1/12 of N. Thus, outside this group we have N - N/12, which is 11N/12, leading to answer (E)
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