$\begin{array}{1 1} 45 \\ 50 \\ 90 \\ 100 \end{array}$

Want to ask us a question? Click here

Browse Questions

Ad |

0 votes

0 votes

- A relation in any set S is a sub set of $S\times\:S$.
- If no. of elements in $S= n(S)=n$, then $n(S\times\:S)=n^2$

Ans: ( C) 90

Given $n(S)=10 \:\:\Rightarrow\: n(S\times\:S)=100$

But $ A\subset(S\times\:S)$

But A does not have elements $(x,x)$ which are 10 in number.

$\Rightarrow $ no. of elements in A =100-10 =90

Ask Question

Take Test

x

JEE MAIN, CBSE, AIPMT Mobile and Tablet App

The ultimate mobile app to help you crack your examinations

...