From the question stem, it is clear that there are 7 married couples

in the lounge and suddenly N people leave from the lounge. We need

to check how many married couples remain after these N people leave.

1. N > 10N could be 11,12,13, or 14.

If N=11, there could be 1 couple and 1 husbands left in the lounge.

Other possibilities include all husbands/wives. As it is unclear, how

many married couples remain, this statement is

not sufficient2. N < 13N could be between 1 and 12

Consider the same example that we have used to prove the validity

of Statement 1. Again, this statement is

not sufficient

On combining the information in both the sentences, we can definitely say

that the number of people who got up and left is either 11 or 12. Using

the same case(if N=11, we can't clearly come to a conclusion about the

number of married couples which remain in the lounge)

(Insufficient - Option E)
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