Sign up now
to enroll in courses, follow best educators, interact with the community and track your progress.
Download
Relations : lesson-6( in Hindi)
72 plays

More
Important relations for exam point of view

Reenu Bala is teaching live on Unacademy Plus

Reenu Bala
Plus Educator💫⭐ M.sc.(maths) ,B.Ed. with maths and science,...passionate about teaching.. IIT JAM qualified, C.T.E.T. , H.T.E.T. Qualified.

Comments
U
Unacademy user
how did you get a intersection b in the nationality question if possible tell me my mistake too we can consider the group of Dutch and britishers to sit together that we consider them to be a single quantity and number of ways to arrange them with the others is 2! and now the people inside of this quantity can be arranged in 2! number of ways hence 4