Question

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

Answer 1

We know that Number of proper subsets formula = (2^n) - 2.

Here n = 3.

 So, number of proper subsets will be

= > (2^3) - 1

= > 8 - 1

= > 7.

= > {1},{2},{3},{1,2},{2,3},{1,3},{1,2,3}.



Hope this helps!