- A15
- B6
- C7
- D9
Step-by-Step Solution
Both twins come: choose 2 more from the other 4, . Neither comes: all 4 from the other 4, 1 way. Total ignores the twins.)
Answer: C) 7
Rahul invites exactly 4 of his 6 friends to dinner. Two of the friends are twins who will come only together. How many guest lists are possible?
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