Let A = {4, 5, 6, 7, 8, 10, 11}
A. How many subsets does A have?
B. How many proper subsets does A have?
a. A has ___ subsets.
A. A has \(2^7 = \mathbf{128}\) subsets
B. A has \(2^7 -1 = \mathbf{127}\) proper subsets
+225 
