Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Need explanation for: If a set has 20 elements.How many ordered pairs having distinct elements can be formed?

If a set has 20 elements.How many ordered pairs having distinct elements can be formed?

  • Option 1)

    150

  • Option 2)

    170

  • Option 3)

    190

  • Option 4)

    210

 

Answers (3)

best_answer

As we learnt

 

ORDERED PAIR -

 

A pair of elements grouped together in a particular order.

- wherein

eg. (a,b), a\epsilon A \and\ b\epsilon B

 

 The number of ordered pairs = 20C_{2}=190

 


Option 1)

150

Option 2)

170

Option 3)

190

Option 4)

210

Posted by

Himanshu

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

380 is my ans since ab and ba both are different

Posted by

Abhi Jesus

View full answer

380 is my ans since ab and ba both are different

Posted by

Abhi Jesus

View full answer

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2026 session 2 application correction begins on jeemain.nta.nic.in; edit details by tomorrow
anam-khan

JEE Main 2026 Registration LIVE: Session 2 exam from April 2 to 9; shift timings, admit card, exam pattern
anam-khan

JEE Main 2026 session 2 registration ends today for BTech, BArch; apply at jeemain.nta.nic.in

Latest Question