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5 indians and 5 american couples meet at aparty and shake hands. if no wife shakes hands with her own husband and no indian wife shakes hands with a male, then the no. of hand shakes that take place in the party is?
Dear jee
total possible hand shake =20C2
indian women shake hand with male =5C1 *10C1 =50 ways (it include hand shake with her husband also)
american women shake hand with their husband in 5 ways
so desired hand shake = 20C2 -50-5
=135
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