How many subsets are there for the Set B = { z, t, v, x}? Include the empty set.
How many subsets can be created from the set of days of the week?
Please be sure to simplify to a number.
If a set has n elements, then the number of subsets is 2^n
this includes the nullset, and the element consisting of all elements.
e.g. if Z = {A,B,C} then the subsets are
A,B,C,AB,AC,BC, ABC, and the null set, that is, 2^3 or 8 of them
Make use of that in your problem