 
                 
                InterviewSolution
 Saved Bookmarks
    				| 1. | If the number of reflexive relations defined on a set A is 64, then the number of elements in A is _____A. 3B. 2C. 6D. 5 | 
| Answer» Correct Answer - A We have number of reflexive relations defined on A is `Z^(n-n)`, where n is the cardinal number of A. Given, `2^(n^(1)-n)=64rArr2^(n^(2)-n)=2^(6)` `rArr n^(2)-n=6rArr n(n-1)=3xx2` `therefore n=3`. | |