JEE Advanced Mathematics question
Kanchan has 10 friends among whom two are married to each other. She wishes to invite 5 of them for a party. If the married couple refuse to attend separately then the number of different ways in which she can invite five friends is
Answer: (B),(C)
Solution
Either both of the couple are invited or neither. - Neither: choose 5 from the other 8: . - Both: choose 3 more from the other 8: .
Total → **(b)** correct.
**(c)** C
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