The number of proper subsets of the set A = {1, 2, 3} is ___.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
7

Given the set $A = {1, 2, 3} .$ Then, $n (A) = 3.$

We know that the number of proper subsets of a set with $n$ elements is $2^{n} - 1.$

$∴$ Number of proper subsets of the set A is $2^{3} - 1 = 7.$

Suggest Corrections

Similar questions

The number of proper subsets of the set ${1, 2, 3}$ is ___.

A = {1, 2, {3, 4}}

A

The number of proper subsets of the set {1, 2, 3} is

The number of proper subsets of a set with m elements is

Join BYJU'S Learning Program