Questions
Let A be a set of n distinct elements. The number of triplets (x, y, z) of the A elements in which at least two coordinates is equal to
detailed solution
Correct option is B
Total number of triplets without restriction is n x n x n. The number of triplets with all different coordinates is . Therefore, the required number of triplets is ,
Talk to our academic expert!
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests