Question

Write all the subset of
C=[5,10,15,20]

​

Answer 1

5, 10, 15, 20, 510, 515, 520, 1015, 1020, 1520, 51015, 51020, 101520, 5101520, { }

Answer 2

Total Subsets are 2^n = 2^4 = 16 subsets

The subsets are following:

∆ (5) (10) (15) (20) (5,10) (5,15) (5,20)

(10,15) (10,20) (15,20) (5,10,15) (5,10,20) (5,15,20) (10,15,20) (5,10,15,20)

Where ∆ = Empty set