Question

per - RMO question for you all students solve this and send me ans... ​

Answer 1

Answer: 15

Step-by-step explanation:

The set contain 4 elements

i.e n=4

then no. of non empty subsets = 2n - 1 = 2⁴ - 1

=16−1=15

The subsets are

[{1},{2},{3},{4},{1,2},

{1,3},{1,4},{2,3}{2,4},

{3,4},{1,2,4},{1,2,3},{1,3,4}

{2,3,4},{1,2,3,4}]