The minimum number of elements that must be added to the relation R ={(a,b), (b,c), (b,d)}on the set {a,b,c,d} so that it is an equivalence relation is

Book Online Demo

Check Your IQ

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

The minimum number of elements that must be added to the relation R ={(a,b), (b,c), (b,d)}
on the set {a,b,c,d} so that it is an equivalence relation is

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

answer is 13.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Let $A = {a, b, c, d}$
Given $R = {(a, b), (b, c), (b, d)}$
We can made R as equivalence
We have to add order pairs (a,a), (b,b), (c,c), (d,d), (b,a), (c, b), (d, b), (a, c), (c, a), (c, d),
(d, c)
(a, d), (d, a)
Then R = {(a,a), (b,b), (c,c), (d,d), (b,a), (c, b), (d, b), (a, c), (c, a), (c, d), (d, c), (a, d),
(d, a)}
Then R is equivalence
Minimum number of ordered pairs = 13