Question

subsets of {1,2,2,3}​

Answer 1

Answer:

The answer is 8

Step-by-step explanation:

Concept:

Number of subsets of a set which contain $n$ distinct elements is $2^n$

Here the given set is $\{1,2,2,3\}$, which contains 3 distinct elements

                        $\Rightarrow n=3$

Therefore numbers of subsets $=2^n=2^3=8$

• Set {1,2,2,3} and {1,2,3} are same, in general we don't write same element more than once in a set.