Q. 18

Mark the correct alternative in the following:

The number of ways in which a host lady can invite for a party of 8 out of 12 people of whom two do not want to attend the party together is

A.

B.

C.

D. none of these

Answer :

A host lady can invite 8 out of 12 people in 12C8 ways.


Two out of these 12 people do not want to attend the party together.


Number of ways =


12C8 - 10C6

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