V K Raman and S N Sharma Solutions for Exercise 3: CONCEPT REVISION TEST-1

The cardinal numbers of the empty set is $1$.

Two sets are equal if they have the same number of elements.

If $A\subset B$ and $B\subset A$, then $A=B$.

Set is a collection of _____ objects

Two equal sets are always _____.

If $n\left(A\right)=5$, then total numbers of subsets of $A$ will be _____.

The _____ set is a subset of every set.

If $A=\varphi$, then $n\left(A\right)=$ _____.