Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • If X and Y are two sets such that X Y has 18 elements X has 8 elements and Y has 15 elements how many elements does X Y have

Q2. If X and Y are two sets such that X \cup Y has 18 elements, X has 8 elements and Y has 15 elements ; how many elements does X \cap Y have?

Answers (1)

best_answer

n( X \cup Y ) = 18

n(X) = 8

n(Y) = 15

n( X \cup Y ) =  n(X) + n(Y) - n(X \cap Y)

n(X \cap Y) = 8 + 15 - 18 

n(X \cap Y) = 5

 

Posted by

seema garhwal

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE Class 12 English Exam Analysis 2025: Paper rated 'easy, straightforward'; section-wise difficulty level
anam-khan

CBSE 12th Board Exam Live: CBSE Class 12 English paper 'easy and balanced'; answer key updates
anam-khan

CBSE Class 12 Maths paper 2025 'moderate but lengthy', questions from PYQ, NCERT

Latest Question